One common criticism of Christianity points to the sheer number of denominations, traditions, and theological disagreements within the Christian world. Catholics, Eastern Orthodox, Baptists, Methodists, Presbyterians, Lutherans, Pentecostals, Anglicans, and many others don’t agree on every point of doctrine. Christians debate baptism, church government, spiritual gifts, predestination, communion, end-times prophecy, and numerous other subjects. From this diversity, the skeptic may conclude that Christianity has no coherent theological doctrine at all. If Christians themselves can’t agree about what Christianity teaches, the argument goes, why should anyone believe that Christianity possesses revealed truth?
The objection has some force as a criticism of Christian division. Christians shouldn’t pretend that theological disagreements are trivial, nor should denominational fragmentation always be celebrated. Some disagreements involve significant doctrinal questions, and Christians have sometimes divided over matters that could have been approached with greater humility and charity.
But the existence of disagreement doesn’t establish the much stronger claim that Christianity lacks a coherent theological core. That conclusion confuses disagreement about a belief system with the absence of the belief system itself. When Christianity is examined historically, biblically, and logically, a substantial body of common doctrine emerges beneath the denominational diversity.
Diversity Doesn’t Equal Incoherence
The first problem with the skeptical argument is logical.
People can disagree about the interpretation or implications of something without proving that the underlying subject is incoherent. Lawyers disagree about constitutional interpretation without demonstrating that there’s no Constitution. Historians disagree about the causes of wars without proving that wars never occurred. Scientists debate competing explanations of evidence without thereby establishing that science has no coherent body of knowledge.
Disagreement demonstrates disagreement. By itself, it demonstrates nothing more.
The relevant question is therefore not, “Do Christians disagree?” Obviously, they do. The relevant question is, “Do Christians disagree about everything so fundamentally that there is no identifiable body of Christian belief?”
Historically, the answer is no.
Different branches of Christianity have maintained substantial agreement about central claims concerning God, Christ, humanity, sin, redemption, resurrection, and final judgment. Their disagreements occur within an already-existing framework of shared convictions.
A Baptist and a Presbyterian may disagree about infant baptism while agreeing that Jesus Christ is Lord, that He was crucified and raised from the dead, that humanity is sinful, that salvation comes through Christ, and that God will finally judge the world. Their disagreement about baptism is real, but it doesn’t erase their agreement about Christianity’s central message.
Christianity Has an Identifiable Doctrinal Center
Long before modern denominations existed, Christians were summarizing the central doctrines of their faith.
The historic creeds of Christianity demonstrate this clearly. The Nicene Creed, developed in the fourth century, affirmed foundational Christian convictions concerning one God, the deity of Christ, the incarnation, Christ’s crucifixion and resurrection, the Holy Spirit, the church, the resurrection of the dead, and the life to come.
Likewise, the Definition of Chalcedon in AD 451 articulated the historic Christian understanding that Jesus Christ is truly God and truly man.
These statements didn’t create Christianity. They summarized beliefs Christians understood to arise from Scripture and clarified them in response to controversy.
Even today, Roman Catholics, Eastern Orthodox Christians, Anglicans, Lutherans, Presbyterians, Methodists, Baptists, and many other historically Christian traditions recognize much of this theological inheritance despite their significant differences elsewhere.
The New Testament itself contains concise summaries of Christian belief long before later creeds appeared. Paul writes: “For I delivered unto you first of all that which I also received, how that Christ died for our sins according to the scriptures; And that he was buried, and that he rose again the third day according to the scriptures” (1 Corinthians 15:3–4).
That declaration identifies a central Christian proclamation: Christ died for sins and rose bodily from the dead.
Paul likewise summarizes the confession of Christian faith: “That if thou shalt confess with thy mouth the Lord Jesus, and shalt believe in thine heart that God hath raised him from the dead, thou shalt be saved” (Romans 10:9).
Whatever disagreements later arose among Christians, the identity, death, resurrection, and lordship of Jesus Christ remained at the heart of historic Christianity.
Not Every Difference Creates a Different Christianity
The objection also tends to treat every denomination as though it represented an entirely separate religion. That’s misleading.
Many denominations exist because Christians disagree about secondary or institutional matters while sharing the major doctrines of the faith. Differences frequently concern questions such as the proper subjects or mode of baptism, the organization of church leadership, the relationship between divine sovereignty and human responsibility, the continuation of miraculous spiritual gifts, details of eschatology, worship practices, or the relationship between local congregations and larger ecclesiastical structures.
These questions matter. Some are quite important. But disagreement concerning them doesn’t necessarily create an entirely different theological system.
Consider two Christians debating whether baptism should be administered to infants. Both may believe in the Trinity, Christ’s deity, His virgin birth, His substitutionary death, His bodily resurrection, salvation by grace, the authority of Scripture, and the future resurrection of believers. Their disagreement is significant, but describing them as adherents of two entirely unrelated “versions of Christianity” exaggerates the difference.
Christian theology has historically distinguished between doctrines central to the identity of Christianity and doctrines over which faithful Christians may disagree.
Paul himself recognized that disagreements could exist among believers without destroying Christian fellowship. Romans 14 discusses disagreements concerning food and the observance of particular days. Rather than suggesting that every disagreement created a new Christianity, Paul urged believers to avoid condemning one another over such matters.
This principle doesn’t mean that doctrine is unimportant. The New Testament repeatedly warns against false teaching. It means that Christianity has always possessed some concept of doctrinal priority.
Some truths define the faith. Others concern how those truths should be understood or practiced.
Scripture Actually Predicts Disagreement
Christian disagreement is also less surprising when the teachings of Christianity itself are considered. The Bible never predicts that Christians will interpret everything perfectly. Human beings remain fallible.
Paul writes: “For now we see through a glass, darkly; but then face to face” (1 Corinthians 13:12).
The New Testament records disagreements even among sincere believers. Paul and Barnabas sharply disagreed over whether John Mark should accompany them on a missionary journey (Acts 15:36–40). Early Christians debated the relationship between Gentile converts and the Mosaic law (Acts 15). Paul corrected Peter regarding conduct that compromised the implications of the gospel (Galatians 2:11–14).
Christianity therefore doesn’t teach that conversion suddenly makes every believer intellectually infallible. On the contrary, Scripture repeatedly commands believers to study, test claims, correct error, pursue wisdom, and grow in understanding.
Paul instructed Timothy: “Study to shew thyself approved unto God, a workman that needeth not to be ashamed, rightly dividing the word of truth” (2 Timothy 2:15).
The command to “rightly divide” the Word necessarily allows for the possibility that someone might divide it wrongly. The existence of mistaken interpretations is therefore not an unexpected contradiction of Christianity. It’s consistent with Christianity’s teaching about human limitations.
Denominations Aren’t All Theological Revolutions
The apparently overwhelming number of Christian denominations can also be deceptive. Lists claiming that Christianity contains tens of thousands of denominations often count separately organized Christian bodies in different countries as distinct denominations even when they share essentially the same theology. Administrative organizations, national church bodies, independent ministries, and closely related denominational branches may all receive separate classifications.
Consequently, raw denominational numbers can give the impression that there are thousands upon thousands of radically different Christian belief systems when the theological diversity is considerably less dramatic.
There are certainly meaningful theological families within Christianity. Roman Catholicism, Eastern Orthodoxy, and Protestantism differ on important matters. Within Protestantism, further differences exist among Reformed, Lutheran, Baptist, Wesleyan, Anglican, Pentecostal, and other traditions.
But these traditions don’t produce thousands of completely unrelated answers to every Christian doctrine. Most differences cluster around a comparatively limited set of recurring theological questions. The picture is therefore not one of endless doctrinal chaos but of a common theological inheritance accompanied by significant disagreement regarding portions of that inheritance.
Some Disagreements Really Do Matter
A responsible Christian response shouldn’t simply wave away every doctrinal disagreement as insignificant. Some groups identifying themselves as Christian reject doctrines historically regarded as fundamental to Christianity. A movement might deny the Trinity, reject Christ’s deity, redefine His resurrection, or fundamentally alter the biblical understanding of salvation. At that point, the issue becomes more substantial than a denominational difference.
Christianity has historically drawn doctrinal boundaries precisely because Christianity does have identifiable theological content. The irony is important. Calling something “heretical” would be impossible if Christianity possessed no coherent doctrine. A counterfeit can only be identified when there’s some standard against which it’s compared.
When early Christians rejected Arianism, Gnosticism, or other competing theological systems, they weren’t demonstrating that Christianity possessed no doctrinal identity. They were demonstrating that Christians believed certain doctrines were sufficiently central that denying them placed a teaching outside the boundaries of the apostolic faith.
Doctrinal controversy therefore doesn’t necessarily demonstrate doctrinal emptiness. Sometimes it demonstrates precisely the opposite.
Interpretation Doesn’t Eliminate Meaning
The skeptical argument may nevertheless continue: If intelligent Christians studying the same Bible reach different conclusions, perhaps Scripture is simply too ambiguous to provide meaningful theological guidance.
Again, the conclusion doesn’t follow. Texts can contain clear teachings alongside difficult passages.
Peter acknowledged that some of Paul’s writings contained “some things hard to be understood” (2 Peter 3:16). Notice what Peter didn’t say. He didn’t suggest that everything Paul wrote was incomprehensible. Some things were difficult precisely because many other things were sufficiently understandable for the difficult passages to stand out. Scripture itself recognizes differences in clarity.
Christians may disagree about the identity of the “man of sin” in 2 Thessalonians 2 while overwhelmingly agreeing that Jesus was crucified. They may debate the interpretation of the millennium in Revelation 20 while agreeing that Christ rose from the dead. They may disagree about the precise relationship between divine sovereignty and human responsibility while agreeing that God is sovereign and humans are morally accountable.
Disagreement about difficult questions doesn’t erase clarity concerning more fundamental ones.
The Same Evidence Can Produce Different Interpretations
There’s also a philosophical issue behind the objection. Human beings interpret evidence through intellectual, cultural, historical, and personal frameworks. The presence of divergent interpretations doesn’t automatically mean that the evidence contains no truth.
Two people may read the same historical documents and reach different conclusions. Two judges may interpret the same statute differently. Two physicians may initially offer different diagnoses from the same symptoms. The proper response isn’t to conclude that there’s no truth to discover, but to examine which interpretation best accounts for the evidence. The same principle applies to Christianity.
When Christians disagree about a biblical doctrine, the responsible question isn’t merely, “How many interpretations exist?” It’s, “Which interpretation best fits the biblical text in its grammatical, historical, literary, and theological context?” Truth isn’t determined by counting interpretations. Ten incorrect interpretations don’t negate the correct interpretation.
Christianity’s Unity Is Centered in Christ
Ultimately, Christianity isn’t unified because every Christian answers every theological question identically. Its unity centers on Jesus Christ.
The New Testament presents Christianity as the proclamation of who Christ is and what God accomplished through Him. Jesus asked His disciples: “But whom say ye that I am?” (Matthew 16:15). That remains the decisive question.
Historic Christianity answers that Jesus is the divine Son of God who entered human history, died for sins, rose bodily from the grave, reigns as Lord, and will return.
Around that confession Christians have developed theological traditions, ecclesiastical structures, confessions, and denominations. Those traditions sometimes disagree sharply, and those differences deserve careful examination rather than dismissal. Yet disagreement around the edges doesn’t eliminate agreement at the center.
The Skeptical Argument Proves Too Much
There’s one final difficulty with using disagreement as evidence against Christianity. If disagreement proves that Christianity can’t possess truth, the same reasoning would undermine nearly every field in which human beings seek truth.
Philosophers disagree about morality. Economists disagree about economic policy. Historians disagree about historical interpretation. Scientists disagree about unresolved scientific questions. Atheists disagree among themselves regarding morality, consciousness, free will, the foundations of reason, the origin of the universe, and numerous other philosophical questions.
None of this proves that philosophy, economics, history, science, or atheism is necessarily false. Plurality of opinion demonstrates human disagreement, not the nonexistence of truth.
Christianity should be evaluated in the same way. Its central claims should be examined according to their evidence, logical coherence, historical credibility, and explanatory power.
Many Denominations, but Not Many Different Gospels
Christian denominational diversity presents a legitimate challenge for the church. Some divisions have resulted from serious theological convictions; others have arisen through cultural differences, personalities, politics, traditions, or unnecessary disputes. Christians should approach such divisions with humility rather than pretending they’re always harmless. But denominational diversity doesn’t justify the conclusion that Christianity contains no coherent theology.
Beneath the diversity stands an identifiable historical faith centered upon the Triune God, the incarnation of Christ, His death for sins, His bodily resurrection, humanity’s need for redemption, God’s saving grace, the resurrection of the dead, and final judgment. Christians debate many important questions surrounding these truths. They don’t therefore possess no truths at all.
The real question isn’t whether Christians have ever disagreed. They plainly have. The real question is whether the central claims of Christianity are true. And that question can’t be settled simply by counting denominations. It must be settled by examining Christianity’s actual claims, especially its central claim that Jesus Christ died, was buried, and rose again.
If Christ didn’t rise, Christian diversity hardly matters because Christianity itself is false. But if Christ rose from the dead, then denominational disagreement doesn’t make Christianity incoherent. It makes the careful pursuit of biblical truth all the more important.