Introduction

Christianity and Islam are the two largest religious traditions in the world. Both teach that there is one Creator God. Both speak of Abraham, Moses, Jesus, revelation, sin, judgment, heaven and hell. Both call people to believe in God and live according to His truth.

But Christianity and Islam make very different—and sometimes directly contradictory—claims about who God is, who Jesus is, what happened to Jesus, how our sins are forgiven, how we can be transformed, and how God expects us to treat other people.

Those differences matter. If Christians have misunderstood God, we need to know. If Muslims have misunderstood God, they need to know. If any of us are heading in the wrong direction concerning God and eternity, the loving response is not to ignore the differences. It is to seek the truth and help one another see it.

So who is God? Who is Jesus? Which revelation can we trust? And why does getting these answers right matter?

Love Requires Us To Seek The Truth

Jesus commands Christians to love God, love our neighbors and even love our enemies. That includes Christians, Muslims, people of every other religion, and people who currently reject God altogether.

“You shall love your neighbor as yourself.” — Matthew 22:39

God desires people to be saved and “to come to the knowledge of the truth” (1 Timothy 2:4). Therefore, this is not about winning an argument or attacking Muslims. It is about something far more important.

If I am wrong about God, I want to know. If someone I love is wrong about God, I should care enough to help them investigate.

Love does not require us to pretend contradictory beliefs are equally true. Love requires us to seek the truth, speak the truth with humility, and allow other people to examine the evidence for themselves.

What Do Christianity And Islam Actually Believe?

Christianity and Islam share enough terminology that they can initially appear very similar. But using the same words does not necessarily mean believing the same things.

Christianity 101

Christianity teaches that one Creator God made us to know Him and live in relationship with Him. Humanity rebelled against God, and sin separated us from Him. We cannot remove our own guilt or fundamentally transform ourselves through human effort.

So God came to us. Jesus Christ is God the Son who became human, lived without sin, willingly died for our sins and rose from the dead. Salvation is offered by God’s grace and received through faith in Christ. Those who receive Him are born again, become children of God and receive the Holy Spirit, who transforms them from within as they purposefully put off their old self serving habits and ways, and put on Christ and his self sacrificial ways in loving service to others.

Islam 101

Islam teaches that there is one Creator God—Allah—and Muhammad is His final prophet. Allah is simply the Arabic word for God and is also used by Arabic-speaking Christians. The important question is whether Christianity and Islam reveal the same nature and character of God.

Islam recognizes Abraham, Moses and Jesus among God’s prophets. It honors Jesus as Messiah and affirms His miraculous birth. Some key differences include rejecting the Christian beliefs that  Jesus is God in the flesh, or the divine Son of God, or that He was crucified.

Islam rejects the Christian claim that Jesus was crucified. Qur’an 4:157 says Jesus was neither killed nor crucified, but that “it was made to appear so.” Some Islamic traditions explain this as another person being made to resemble Jesus and crucified in His place. Qur’an 4:158 then says Allah raised Jesus to Himself. Mainstream Islam tradition teaches that Jesus escaped death, was raised alive to heaven, and will return as a human Messiah at the the end of times and eventually experience death.

Muslims are called to submit to God, believe, repent, pray, obey His commands, perform righteous deeds and depend upon God’s mercy and judgment.

Where Do These Teachings Come From?

Before comparing the claims of Christianity and Islam, it helps to understand where those claims come from. The Bible and the Qur’an are not organized the same way, and terms such as Torah, Old Testament, Gospel, New Testament, Qur’an and Hadith can be confusing if you are unfamiliar with them.

The Bible is actually a collection of books written over many centuries. Christians divide those books into two major sections: the Old Testament, written before Jesus, and the New Testament, which records Jesus and the beginning of the Christian church.

 

Collection	Part	What It Contains	Why It Matters To Our Investigation
Old Testament Before Jesus	Torah / Law Genesis–Deuteronomy	Creation, Adam, Noah, Abraham, God’s covenant, Moses, God’s Law, sacrifice and Israel’s beginnings.	Establishes the Creator, human sin, Abraham, Moses, sacrifice and the foundation of God’s revelation.
	History	Israel’s history, kings, rebellion, judgment, restoration and God’s continuing covenant relationship.	Shows God’s interaction with His people and the historical development of His plan.
	Wisdom / Poetry	Psalms, Proverbs and other writings about God, worship, wisdom, suffering and righteous living.	Reveals God’s character and includes important passages Christians understand as pointing toward the Messiah.
	Prophets	God’s messages calling people back to Him and revealing future judgment, restoration and the coming Messiah.	Contains predictions and descriptions Christians believe Jesus later fulfilled—including important clues about who the Messiah would be.
New Testament Jesus and the early church	Gospels Matthew, Mark, Luke, John	Accounts of Jesus’ birth, identity, teaching, miracles, crucifixion and resurrection.	Our primary sources for investigating who Jesus is and what happened to Him.
	Acts, Letters & Revelation	The beginning of the church, apostolic teaching about Jesus, salvation and Christian living, and future hope.	Shows what Jesus’ earliest followers believed and taught about Him and how His work changes our relationship with God.
Islamic Scripture	Qur’an	Revelations Muslims believe Allah gave to Muhammad through the angel Gabriel during the seventh century.	Islam’s highest scriptural authority. It speaks about Adam, Abraham, Moses, Mary and Jesus and makes claims that sometimes agree with and sometimes contradict the earlier biblical accounts.
Islamic Tradition	Hadith	Reports about Muhammad’s words, actions and approvals collected and evaluated within Islamic tradition.	Important for understanding Muhammad’s example and many Islamic beliefs and practices. Hadith are distinct from the Qur’an and vary in classification and acceptance.

Discussion of this topic usually gets into what is in the various books and it helps to understand the Torah is not a separate book competing with the Old Testament; it is the first five books within it. Likewise, the Gospels are not a separate document, they are the first four books within the New Testament. The Qur’an and Hadith have a different relationship: the Qur’an is Islam’s scripture, while the Hadith are later reports about Muhammad’s words and actions that are taken as guidance to the various groups that embrace them.

This structure also reveals something important for our investigation, It gives us a historical sequence:

Torah → Old Testament history, wisdom and prophets → Jesus → Gospels and New Testament → Qur’an → Hadith collections.

That sequence will become important. Christianity claims that God’s revelation progressively points toward Jesus and is fulfilled in Him. Islam arrives centuries later and affirms many of the same people—including Abraham, Moses and Jesus—offers many differences in the details of the  history reported in the old testament, and changes some of the most important conclusions about who Jesus is and what happened to Him.

So rather than simply asking which religion sounds more appealing, we can follow the evidence through the documents and ask which account best fits the complete revelation and the historical record.

Who Is Jesus?

Jesus occupies an extraordinary position in both Christianity and Islam but they make fundamentally different claims about Him.

Christians worship Jesus as Lord and Savior.  Muslims honor Jesus—Isa—as the Messiah, a prophet of God, miraculously born of the virgin Mary, and someone who will return near the end of the age.

The critical role of Jesus in both faiths makes the true identity and nature of Jesus critically important to both faiths.

Let’s look at a few of the claims and notice where they are common and different:

 

Question	Christianity	Islam
Messiah?	Yes	Yes
Miraculous birth?	Yes	Yes
Prophet?	Yes—but much more	Yes
Divine Son of God?	Yes	No
God in the flesh?	Yes	No
Crucified?	Yes	No – It was just made to appear so
Rose from death?	Yes	No – Ascended Directly To Heaven Without Death
Savior from sin?	Yes	No
Returning To Rule and Judge	Yes – As Lord And King	Yes – As Messiah Under Allah’s Authority

The areas of agreement are significant, but they make the differences even more important.

If both faiths tell us Jesus is the Messiah and will return, then understanding who Jesus really is should matter deeply to Christians and Muslims alike.

Christianity says Jesus is God who became man, willingly died for our sins, rose from death, and will return as Lord and King.

Islam says Jesus is the Messiah and an extraordinary prophet, but He is not God or the divine Son of God, and He was not crucified.

Those claims cannot all describe the same historical person accurately.

Three questions therefore become especially important:

Was Jesus God?

Was Jesus crucified?

Did Jesus rise from the dead?

Was Jesus God?

A central claim of Christianity is that Jesus is God who became human. He is not merely a prophet bringing a message from God; Christianity teaches that God Himself entered His creation in Jesus Christ.

John states the claim directly:

“In the beginning was the Word, and the Word was with God, and the Word was God.”

— John 1:1 

John then identifies this eternal Word with Jesus:

“And the Word became flesh and dwelt among us…” — John 1:14

Jesus’ own words and actions reinforce that claim. He forgives sins, receives worship, exercises authority belonging to God and makes remarkable statements about His identity.

“Before Abraham was, I AM.” — John 8:58

After encountering the risen Jesus, Thomas responds:

“My Lord and my God!” — John 20:28

Jesus does not correct him.

Was This Idea Added Later?

One possible challenge is that Christians gradually elevated Jesus from prophet to God after His death. That claim can be tested by looking backward as well as forward.

Long before Jesus was born, the Hebrew Scriptures anticipated a coming Messiah with extraordinary characteristics.

Isaiah describes the promised Son:

“For unto us a Child is born, unto us a Son is given… And His name will be called Wonderful, Counselor, Mighty God, Everlasting Father, Prince of Peace.” — Isaiah 9:6

Micah foretells a ruler coming from Bethlehem whose origins are:

“From of old, from everlasting.” — Micah 5:2

Daniel sees “One like the Son of Man” receiving everlasting dominion over all peoples, nations and languages (Daniel 7:13–14). Jesus repeatedly identifies Himself as that Son of Man.

The Christian claim is therefore not simply that later followers decided to make Jesus divine. The argument is that God progressively revealed the coming Messiah, Jesus fulfilled that revelation, Jesus claimed divine identity, and His earliest followers proclaimed Him accordingly.

Islam presents a different conclusion. The Qur’an honors Jesus as Messiah and prophet but explicitly rejects the belief that Jesus is God or God’s divine Son.

That leaves a foundational question:

Which understanding best fits God’s prior revelation, Jesus’ own words and actions, and the testimony closest to His life?

Was Jesus Crucified?

The crucifixion of Jesus stands at the center of Christianity. The Gospel accounts say Jesus was arrested, condemned, crucified, died and was buried. His followers proclaimed His death from the beginning because they understood it as the sacrifice through which God dealt with human sin.

“And when they had crucified Him…” — Mark 15:24

The Qur’an presents a conflicting account. Qur’an 4:157 says of Jesus that “they did not kill him, nor did they crucify him.”

This gives us something unusually concrete to investigate. Jesus was either crucified or He was not.

The New Testament accounts and earliest Christian proclamation come from the first century. The Qur’an’s contrary account appears approximately six centuries later. Historical proximity alone does not settle the issue, but it gives us an important evidence trail to examine.

What do the earliest Christian and non-Christian sources say happened to Jesus?

This question matters enormously because if Jesus was crucified, one of Islam’s central claims about Jesus conflicts with the historical event Christianity has proclaimed from its beginning.

Did Jesus Rise From The Dead?

Christianity makes an even greater claim: the Jesus who was crucified and buried physically rose from death.

The resurrection is not a peripheral Christian doctrine. The earliest Christians presented it as God’s decisive validation of Jesus and the foundation of their hope.

Paul makes Christianity remarkably vulnerable to investigation:

“And if Christ is not risen, your faith is futile; you are still in your sins!” — 1 Corinthians 15:17

In other words, Christianity says: if Jesus did not rise, our faith fails.

So the appropriate response is not simply to accept or reject the resurrection because it sounds miraculous. Investigate what happened.

Was Jesus actually dead? Was He buried? Why did His followers begin proclaiming that they had seen Him alive? How early did that proclamation begin? What caused frightened followers to publicly proclaim a risen Jesus despite persecution and death?

Different explanations can be proposed, but the historical claim itself deserves examination.

Why Getting Jesus Right Matters

Christianity and Islam agree on something remarkable: Jesus matters.

Both identify Him as Messiah. Both affirm His miraculous birth. Both assign Him an extraordinary role in God’s plan. And both traditions anticipate His return in the end times. But then their accounts sharply diverge.

Christianity says the returning Jesus is Lord and King. Islam expects Jesus to return as Messiah under Allah’s authority.

That raises an important question even within the Islamic account:

Why does Jesus occupy such an extraordinary position—and why is Jesus, rather than Muhammad, the figure who returns near the end of the age?

Christianity offers a straightforward answer:

Because Jesus is more than a prophet – He is God in the Flesh.

If Jesus is merely a prophet, Christians have fundamentally misunderstood Him.

But if Jesus is God who became man, was crucified for our sins, rose from death and will return as Lord, then Islam has misunderstood the most important person it also tells its followers to honor.

That is why the question Jesus asked His disciples remains central to Christians, Muslims and anyone sincerely seeking God:

“But who do you say that I am?” — Matthew 16:15

As you can see, one of the most fundamental differences between Christianity and Islam is who Jesus really is.

Both faiths honor Him, but they make radically different claims about His identity, His death and His authority.

This difference is not merely theological. Who Jesus is determines what He can do for us.

That brings us to an intensely personal question: What is wrong with us, and how does God fix it?

What Is Wrong With Us — And How Does God Fix It?

God created us to know Him, love Him and live in relationship with Him. But humanity has a fundamental problem: we sin. We choose our own desires and ways over God’s, separating ourselves from Him and producing destructive patterns within ourselves and in the world around us.

“For all have sinned and fall short of the glory of God.” — Romans 3:23

Christianity and Islam agree that sin matters, that people are accountable to God, and that God is just and merciful. Both call people to turn from sin and live according to God’s will.

But they provide substantially different answers to what God actually does about our condition.

Our problem is bigger than simply having done some bad things. We need our guilt resolved, our lives transformed and our relationship with God restored.

That gives us four very practical questions:

Who pays for my sin? — How am I forgiven?
Who changes me? — How am I transformed?
Who do I become? — What is my relationship with God?
How does God lead me? — How do I now live and work with Him?

Who Pays For My Sin?

Sin has consequences. Christianity teaches that the ultimate consequence of sin is death.

“For the wages of sin is death, but the gift of God is eternal life in Christ Jesus our Lord.” — Romans 6:23

That creates a fundamental problem. God is merciful and wants to forgive us, but God is also perfectly just. How can a just God forgive guilty people without simply ignoring their guilt?

The Christian Answer

Christianity says God does something extraordinary: God comes to us in Jesus Christ and willingly bears the consequence of our sin Himself.

“For Christ also suffered once for sins, the just for the unjust, that He might bring us to God…”

— 1 Peter 3:18 

Jesus makes clear that His sacrifice is voluntary:

“No one takes it from Me, but I lay it down of Myself.” — John 10:18 NKJV

The cross therefore brings God’s justice and God’s mercy together. The penalty is not ignored. God Himself bears the cost through Jesus.

Salvation becomes something God accomplishes and offers to us by grace rather than something we can earn through enough good behavior.

“For by grace you have been saved through faith… not of works, lest anyone should boast.”

— Ephesians 2:8

Good works still matter. The next verse says we were “created in Christ Jesus for good works” (Ephesians 2:10). But we do not do good works to pay for our salvation. Good works are the fruit of the new life God gives us.

The Islamic Answer

Islam also teaches personal accountability, repentance, righteous living, judgment and God’s mercy. But it rejects Jesus’ atoning death and provides a different explanation of how sin is dealt with.

The Qur’an teaches that each person is responsible for his or her own actions and that “no bearer of burdens will bear the burden of another” (Qur’an 6:164). It also describes judgment using the picture of scales: those whose scales are heavy with good works are successful, while those whose scales are light have lost (Qur’an 23:102–103).

Within this framework, the Muslim believes, repents, obeys, performs righteous deeds, seeks forgiveness and ultimately depends upon Allah’s mercy. Jesus does not die to pay the person’s debt of sin.

There is, however, an unusual teaching in Islamic tradition that deserves further investigation. Sahih Muslim 2767 records traditions in which a Jew or Christian is described as a Muslim’s “rescue from Hell-Fire” or as entering Hell “in his stead.” Another version describes Muslims arriving with enormous sins, Allah forgiving them, and those sins being placed upon Jews and Christians.

Muslim interpreters offer explanations intended to reconcile these traditions with the Qur’an’s teaching that each person bears his own burden. Those explanations should be considered carefully, while also asking how these texts fit together within the Islamic account of judgment.

Christianity presents a very different substitute. God does not select another unwilling sinner to pay for my sin. God comes Himself in Jesus Christ, who willingly gives His life for me.

So the first difference is significant: Christianity says Jesus pays for my sin. Islam rejects the need for Jesus’ atoning death and places my judgment within a framework of personal accountability, deeds, repentance and Allah’s mercy.

Who Changes Me?

Forgiveness solves one enormous problem, but it raises another: How do I actually become different?

Knowing what is right does not guarantee that we will do what is right. We can make resolutions, exercise discipline and try harder, yet repeatedly return to selfishness, pride, lust, anger, greed, fear and other destructive patterns.

Both Christianity and Islam call people to repent, obey God, resist sin and live righteously. The deeper question is whether God primarily gives us guidance to obey, or whether He also gives us new spiritual life and personally indwells us to transform us from within.

The Christian Answer

Christianity says our problem is deeper than insufficient knowledge, rules or effort. We need new life.

Jesus describes the beginning of that transformation as being born again:

“You must be born again.” — John 3:7 NKJV

God then gives believers His Holy Spirit, who works within them to change their thinking, desires, choices and ultimately the fruit their lives produce.

“But the fruit of the Spirit is love, joy, peace, longsuffering, kindness, goodness, faithfulness…” — Galatians 5:22 NKJV

Notice whose fruit it is: the Spirit’s.

Christians still have an active role. We must repent, submit to God, deny ourselves, renew our minds, resist sin, obey and walk in faith. But Christianity says we are not expected to manufacture a new nature through our own willpower.

God gives us new life, and His Spirit provides the power for transformation as we respond and submit to Him.

The Islamic Answer

Islam also seeks to produce a righteous life. Muslims are called to submit to Allah, repent, pray, fast, give, obey God’s guidance, resist wrongdoing and practice righteous conduct. These beliefs and disciplines can strongly shape a person’s behavior, habits and character.

But Islam does not teach the Christian doctrine of being born again and indwelt by the Holy Spirit. Its path to righteous living centers on submission to Allah, obedience to His revelation, repentance, religious practice and dependence upon His guidance and mercy.

The difference therefore is not that Muslims work while Christians do nothing. Christians are repeatedly commanded to act, obey and grow.

The deeper difference concerns the source of the new life and transforming power. Christianity says we need more than instruction about how to live. We need God working within us to transform who we are.

Who Do I Become?

God’s solution to our condition raises one more question. What kind of relationship does God ultimately want with us?

The Christian Answer

Christianity says God’s plan does not stop with forgiving our sins or changing our behavior. He brings us into a new relationship with Himself and gives us a new identity.

Through Jesus Christ, we become children of God.

“But as many as received Him, to them He gave the right to become children of God, to those who believe in His name.” — John 1:12

The New Testament describes this relationship as adoption. We remain God’s servants and He remains our Lord, but God also receives us into His family and invites us to know Him as Father.

“…you received the Spirit of adoption by whom we cry out, ‘Abba, Father.’” — Romans 8:15

That relationship gives us a new identity. In Christ we become a new creation, receive an inheritance as God’s children and are given a purpose in His Kingdom.

“Therefore, if anyone is in Christ, he is a new creation; old things have passed away; behold, all things have become new.” — 2 Corinthians 5:17

The Islamic Answer

Islam likewise teaches that people can know, worship, obey and draw near to Allah. It strongly emphasizes God’s authority as Creator and Lord and the believer’s proper response of worship and submission.

But Islam rejects the Christian understanding of divine Fatherhood and our adoption as God’s children. The believer’s fundamental identity remains that of a worshiper and servant of Allah rather than an adopted child of God through Christ.

Christianity also calls us servants of God, so the distinction is not servant versus relationship. The distinctive Christian claim is that through Jesus, servants are also received as sons and daughters who know God as Father.

How Does God Lead Me?

Being reconciled to God raises another practical question: How does God expect me to live with Him from this point forward?

Both Christianity and Islam teach that God reveals His will and that people should submit to Him and obey His commands. The significant difference is how God relates to and leads the believer.

The Christian Answer

Christianity teaches that God does more than give us instructions to follow. God comes to live within us through His Holy Spirit and personally leads us as we learn to recognize His direction and respond in faith.

“For as many as are led by the Spirit of God, these are sons of God.” — Romans 8:14 NKJV

Jesus described this relationship as an ongoing partnership. We remain dependent upon Him, receive direction and power from Him, and participate in the work He is already doing.

“Abide in Me, and I in you… for without Me you can do nothing.” — John 15:4–5 NKJV

The Christian life is therefore more than learning God’s rules and trying to conform our behavior to them. We submit to God, listen for His direction, are led by His Spirit, respond in faith and participate with Him in accomplishing His purposes.

The Islamic Answer

Islam likewise teaches submission to God and dependence upon His guidance. Muslims seek to know Allah’s will through the Qur’an, the example and teachings of Muhammad, prayer and the broader Islamic tradition, and then live in obedience to that guidance.

Islam can describe Allah as near and responsive to those who call upon Him, so the distinction is not simply that Christianity has a near God while Islam has a distant God.

The deeper difference is that Islam does not teach the Christian promise that God the Holy Spirit personally indwells every believer, transforms that believer from within and leads God’s children in an ongoing relationship with their Father.

That produces two substantially different pictures of life with God:

 

Question	Christianity	Islam
How do I know God’s will?	Through His revealed Word and the leading of His indwelling Spirit, consistent with His truth.	Through Allah’s revealed guidance in the Qur’an, Muhammad’s example and Islamic teaching.
What is my response?	Submit, listen, trust and follow in faith.	Submit and obey Allah’s guidance.
Where does transforming power come from?	God’s Spirit works within me as I cooperate with Him.	The believer seeks Allah’s guidance and help while practicing obedience and righteous living.
What is the relationship?	Child of God, indwelt and led by His Spirit.	Faithful servant and worshiper submitting to Allah.

Christianity therefore describes more than obedience to God’s instructions. It describes an ongoing life with God: His Spirit within us, His direction leading us, His power transforming us and His purposes being accomplished through us.

Two Different Solutions To The Human Problem

We can now see that the difference between Christianity and Islam is much deeper than a simple argument about “faith versus works.”

Both faiths call people to believe, repent, obey and live righteously. The fundamental differences concern what God does for us, what God does within us, and the relationship God brings us into.

 

Question	Christianity	Islam
Who pays for my sin?	Jesus willingly bears my sin and its penalty; forgiveness is received through His finished work.	I am accountable for my actions; I repent, seek forgiveness, do righteous deeds and depend upon Allah’s mercy and judgment.
Who changes me?	I am born again and God’s Spirit transforms me from within as I submit to Him.	I submit to Allah, repent, obey His guidance and practice righteous living.
Who do I become?	A child of God—a new creation brought into relationship with God as Father.	A faithful worshiper and servant of Allah, living in submission to Him.
How does God lead me?	God’s indwelling Spirit personally leads and empowers me as I listen, submit and follow Him in faith.	I seek Allah’s will through the Qur’an, Muhammad’s example and Islamic teaching, then submit to that guidance.

The Christian answer can be remembered very simply:

Who pays for my sin? — Jesus.

Who changes me? — God’s Spirit.

Who do I become? — God’s child.

How does God lead me? — By His indwelling Spirit.

Christianity says I cannot save myself, fundamentally transform myself or restore myself to God. God comes to me and does for me, within me and through me what I cannot do for myself.

Islam offers a substantially different account of how God deals with our sin, how we become righteous and what relationship God offers us.

These accounts cannot both be correct where they contradict. So how do we determine which one actually came from God?

To answer that, we need to examine the revelations themselves.

Which Revelation Can We Trust?

Both Christianity and Islam claim that God has revealed truth to humanity. If God is truth, His revelation should be trustworthy. The Qur’an itself describes the Gospel as containing “guidance and light,” tells the People of the Gospel to judge by what God revealed in it, and describes the Qur’an as confirming preceding Scripture.

But the Bible and Qur’an make conflicting claims about God, Jesus, the crucifixion, salvation and our relationship with God. Where they contradict each other, both accounts cannot be correct.

A contradiction does not by itself tell us which account is wrong. It tells us what we need to investigate.

If both religions claim revelation from the same Creator, we can test those claims by asking three reasonable questions:

Continuity — Does the later revelation confirm or contradict what God previously revealed?

History — Which account best fits the historical evidence closest to the events?

Preservation — Do we have evidence that the documents available today substantially preserve what was originally written?

These tests do not begin by assuming either Christianity or Islam is correct. They give us a practical way to compare the competing claims and follow the evidence.

Test 1 — Continuity: Do The Revelations Agree?

The Bible was written centuries before the Qur’an, yet the Qur’an repeatedly refers to biblical people and events and speaks positively about earlier revelation.

That creates an important question: Does the Qur’an continue and confirm that earlier revelation, or does it contradict it on fundamental issues?

Issue	Biblical Account	Islamic Account
Jesus’ Identity	God the Son made flesh	Messiah and prophet, but not God
Divine Sonship	Central to Jesus’ identity	Rejected
Crucifixion	Jesus was crucified	Qur’an 4:157 denies it
Resurrection	Foundation of Christian faith	Christian death-and-resurrection account is not accepted
Atonement	Jesus willingly bears our sin	Jesus’ atoning death is rejected
Relationship with God	Believers adopted as God’s children	God’s divine fatherhood is rejected

These are not peripheral differences. They concern the identity of God, the identity of Jesus and the central events of salvation.

So continuity raises a serious question:

If the same God revealed both messages, why does the later revelation contradict earlier revelation on such fundamental claims?

Test 2 — History: Which Account Is Closest To The Events?

When two accounts contradict each other about a historical event, we should examine the evidence closest to that event.

The New Testament accounts of Jesus come from the first century, during the lifetime of Jesus’ earliest followers. They consistently proclaim that Jesus was crucified, died and that His followers encountered Him alive afterward.

The Qur’an appeared approximately six centuries later and rejects the crucifixion:

“They did not kill him, nor did they crucify him…” — Qur’an 4:157

Being earlier does not automatically make an account correct, and being later does not automatically make one wrong. But when a later account overturns earlier historical testimony, it is reasonable to ask:

What historical evidence supports the later correction?

This is particularly important because Jesus’ crucifixion is not a minor detail. Christianity says His death and resurrection are central to God’s plan of salvation. Islam says He was not crucified.

Both accounts cannot accurately describe the same historical event.

Which account best fits the evidence closest to what actually happened?

Test 3 — Preservation: Have The Scriptures Been Reliably Preserved?

A common Islamic response is that God originally revealed the Torah and Gospel, but those Scriptures were subsequently corrupted.

That explanation should not simply be accepted or dismissed. It should be tested.

What was changed? When was it changed? Who changed it? And what manuscript evidence shows us what the original supposedly said?

The Qur’an itself makes this question particularly interesting. Qur’an 5:46 describes the Gospel as containing “guidance and light.” Qur’an 5:47 tells the People of the Gospel to judge by what God revealed within it, and Qur’an 5:48 describes the Qur’an as confirming preceding Scripture.

If the Gospel had already become hopelessly corrupted before Muhammad, those statements become difficult to explain. If the corruption supposedly occurred afterward, we possess biblical manuscripts predating Islam against which later copies can be compared.

The existence of textual variants among biblical manuscripts should be acknowledged. But textual variants are not the same thing as evidence that someone replaced an original Islamic Jesus with the Jesus proclaimed throughout the New Testament.

The important question is:

Where is the manuscript evidence showing that the earliest Christians possessed a fundamentally different Jesus from the one found in the New Testament today?

The Qur’an’s transmission should be examined by the same standard.

Muslims commonly emphasize the extraordinary preservation of the Qur’an. There is substantial evidence for an early standardized Qur’anic text. But the popular claim that the Qur’an simply passed from Muhammad forward in one untouched textual form leaves out an important part of Islamic tradition itself.

Sahih al-Bukhari 4987 reports that differences in Qur’anic recitation concerned Hudhaifa, who appealed to Caliph Uthman. Uthman commissioned standardized copies, instructed the compilers what to do if they disagreed over dialect, distributed the resulting copies, and ordered other Qur’anic written materials burned.

That does not prove that today’s Qur’an is unreliable.

It does establish that its transmission history involved collection, disagreement over recitation, standardization and deliberate elimination of competing written materials.

The same standard should therefore be applied to both religions:

Don’t simply accept claims about either book. Examine the manuscripts, transmission history and evidence.

Does The Messenger And The Fruit Match The God Being Revealed?

Documents are not the only evidence available to us. Christianity and Islam also give us people whose lives are presented as examples to follow.

If someone claims to reveal and represent God, it is reasonable to ask whether his teaching, character and example are consistent with the God he claims to represent.

Christianity makes an extraordinary claim about Jesus:

“He who has seen Me has seen the Father…” — John 14:9

Jesus therefore does not merely tell Christians what God is like. Christianity claims that Jesus shows us what God is like.

Islam likewise presents Muhammad as an important example for Muslims.

Let’s examine what each man taught, what each man did, and what followers are instructed to do.

 

Question	Jesus	Muhammad / Islamic Sources
Power	Served others and rejected an earthly kingdom	Muhammad became a religious, political and military leader
Enemies	Commanded love, blessing and prayer for enemies	Islamic sources contain both forgiveness and armed conflict with opponents
Military Force	Never led an army or forced conversion	Muhammad led and authorized military campaigns
Sex And Marriage	Celibate	Muhammad had multiple wives; traditional hadith reports his marriage to Aisha at a young age
Response To Rejection	Invited, taught, served and suffered rejection	Islamic sources include peaceful coexistence as well as legal and military responses in particular circumstances
Personal Sacrifice	Voluntarily gave His life for sinners and enemies	Muhammad endured persecution, migration, warfare and the burdens of leadership

The purpose of this comparison is not to attach insulting labels to Muhammad. It is to ask a legitimate question:

If these lives are offered as examples of God’s will, what do they reveal about the God and morality being represented?

How Should We Treat People Who Reject Our Faith?

Jesus gives Christians an extraordinarily demanding standard:

“Love your enemies, bless those who curse you, do good to those who hate you…”

— Matthew 5:44

Jesus then lives what He teaches. He serves people who reject Him, refuses to establish His Kingdom by military force, suffers at the hands of His enemies and asks for forgiveness for those crucifying Him.

Islamic teaching requires more nuance. The Qur’an includes the principle that there should be no compulsion in religion and contains instructions for just treatment of peaceful non-Muslims. It also contains warfare texts and provisions governing relations with non-Muslim communities.

The Hadith adds another important issue. Sahih al-Bukhari 6922 attributes to Muhammad the instruction concerning someone who changes his Islamic religion: “Whoever changed his Islamic religion, then kill him.” Muslim scholars differ today over whether such texts concern simple private apostasy or apostasy connected with political treason and rebellion, but the text itself became important in classical Islamic apostasy law.

That gives us a concrete question to investigate:

What does each faith ultimately instruct us to do with someone who hears our message and rejects it—or once believes and then walks away?

What Do The Teachings Reveal About Marriage And Women?

Both Christianity and Islam emerged in ancient societies very different from modern Western culture. Their teachings should therefore be examined from their actual documents rather than stereotypes.

The Qur’an contains protections and rights for women that were significant in its historical setting. But it also establishes distinctions between male and female roles that deserve examination.

For example, Qur’an 4:34 describes men as being in charge of women and, in a commonly used English translation, provides a sequence for dealing with a wife from whom rebellion is feared that ends with an instruction translated as “strike them.” Muslim interpreters disagree significantly about the meaning, severity and contemporary application of this passage.

Another difficult issue concerns marriage age. Qur’an 65:4 establishes a divorce waiting period for females who have not menstruated. Classical commentators understood this category to include young girls who had not yet reached the age of menstruation.

Sahih al-Bukhari 5134 also attributes to Aisha the statement that Muhammad married her when she was six and consummated the marriage when she was nine. Some modern Muslim writers dispute that chronology or argue that it must be understood in its historical context. The traditional source itself, however, gives those ages.

Again, the objective is not to insult Muslims. It is to allow the documents themselves to raise the question:

What model of marriage, authority, dignity and protection does each faith establish, and does that model reflect the character of God?

Look At The Fruit

We should also be willing to look beyond theology to what happens when beliefs are lived out.

Both Christianity and Islam have produced communities characterized by devotion to one God, strong families, generosity, charity, moral discipline and care for people in need. Both also have followers and governments that have committed terrible acts while claiming religious justification.

We therefore need to be careful. A crime committed by a Christian does not prove Jesus commanded it. A crime committed by a Muslim does not prove Muhammad or the Qur’an commanded it.

The more useful investigation is:

What does the religion actually teach? What did its primary model demonstrate? What happened historically when those teachings were implemented? And what observable fruit do they produce today?

Useful areas to investigate include religious freedom, freedom to convert or leave the faith, treatment of religious minorities, treatment and protection of women, use of religious coercion, charity, family stability, forgiveness, reconciliation and individual moral transformation.

Why Does It Matter?

Christianity and Islam are not simply offering two different styles of worship.

They give different answers to life’s most consequential questions.

 

Question	Why It Matters
Who is God?	I need to know whom I am worshiping.
Who is Jesus?	Is He merely a prophet—or God who came to rescue me?
Was Jesus crucified?	The Bible and Qur’an cannot both be historically correct about the same event.
Did Jesus rise?	If He did, Christianity’s central claim demands an answer.
Who pays for my sin?	Can I erase my own guilt, or must God provide the solution?
Who changes me?	Is righteous living primarily a matter of guidance and obedience, or does God need to transform me from within?
Who do I become?	Does God receive me only as His servant and worshiper, or also as His adopted child and heir?
How does God lead me?	Does God give me guidance to obey, or does He also indwell and personally lead me by His Spirit?
Which revelation can I trust?	Conflicting claims must be tested against continuity, history and preservation.
How should I treat people who reject my beliefs?	My understanding of God should shape how I love other people.
What happens when I die?	I am ultimately trusting one of these accounts—or another—for eternity.

Christianity makes an extraordinary proposition.

You cannot reach God by becoming good enough—so God came to you.

You could not pay for your sin.

Jesus paid it.

You could not fundamentally transform yourself.

God gives you His Spirit.

You were separated from God.

Jesus reconciles you.

You were spiritually dead.

God makes you alive.

And God does not merely invite you to become a better servant.

Through Jesus, He invites you to become His child.

“But as many as received Him, to them He gave the right to become children of God…”

— John 1:12 

Then He sends you into the world not to hate people who disagree with you, but to love them, serve them, tell them the truth and help them discover Jesus for themselves.

Don’t Take My Word For It — Test The Claims

You should not become a Christian because this article tells you Christianity is true. You should not remain a Muslim because someone told you Islam is true. And you should not reject both simply because someone told you all religions are unreliable.

Investigate.

Read the Gospel accounts of Jesus. Read the Qur’an. Examine the Hadith when claims depend upon them. Investigate the manuscript histories. Investigate the crucifixion. Investigate the evidence surrounding the resurrection. Compare Jesus and Muhammad. Examine what their teachings produce when faithfully followed.

Most importantly, sincerely ask God to reveal the truth—and be willing to follow wherever the truth leads.

Jesus asked His disciples a question that ultimately confronts every person who investigates Him:

“But who do you say that I am?” — Matthew 16:15

If Jesus was merely a prophet, Christianity has profoundly misunderstood Him.

But if Jesus really is God who became man, willingly died for our sins and rose from death, then He is not simply another religious teacher whose ideas we can choose to accept or reject.

He is Lord.

Ask God

Set aside what Christians have told you. Set aside what Muslims have told you. Set aside what your family, culture and traditions have told you. Ask God sincerely, listen, and then investigate what He shows you against the evidence.

Lord, who is Jesus really? Show me what is true, expose anything I believe that is false, and help me follow You wherever the truth leads.

Truth does not need to fear investigation.