Introduction — the question and why it matters
This is one of the most important religious questions anyone can ask: Who speaks with God’s authority, and who saves humanity? Muslims revere Muhammad as God’s final prophet; Christians confess Jesus Christ as God the Son, Redeemer, and definitive revelation of God. This article presents a fair, evidence-based, Christian apologetic case — using the Bible, the earliest Christian witnesses, church history, mainstream scholarship, and the Catholic Magisterium — explaining why Christian doctrine identifies Jesus (not Muhammad) as the one with divine authority and the unique Savior of mankind.
I will keep the tone respectful toward Islam and Muslims while giving the Christian case clearly and carefully.
Short answer (for readers in a hurry)
From the standpoint of the Bible and historic Christian doctrine, Jesus Christ possesses unique divine authority and is the Savior of the world (John 14:6; Acts 4:12; Hebrews 1:1–3). Muhammad, historically speaking, is a major prophet and founder of Islam (7th century A.D.), but within Christian theology he is not regarded as divine, nor as the Savior who atones for sin. The following sections show why — biblically, historically, and theologically.
1. What the Bible says about Jesus’ unique authority and saving role
Key biblical claims Christians base their doctrine on:
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Jesus is God the Son made flesh. “In the beginning was the Word… and the Word became flesh.” — John 1:1, 14. 
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Jesus is the only Savior and Mediator. “And there is salvation in no one else, for there is no other name under heaven given among men by which we must be saved.” — Acts 4:12. Also: “For there is one God, and there is one mediator between God and men, the man Christ Jesus.” — 1 Timothy 2:5. 
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Jesus’ atoning work is unique. Hebrews 1–10 presents Christ’s one perfect sacrifice that fulfills and replaces the old sacrifices. 
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Jesus’ authority over life, death, and judgment. “All authority in heaven and on earth has been given to me.” — Matthew 28:18. 
These texts form the doctrinal backbone of the Christian claim that Jesus is not merely a prophet but God's definitive self-revelation and the Savior whose death and resurrection secure forgiveness of sins.
2. Who was Muhammad — short, historical profile (from Islamic and secular sources)
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When: c. 570–632 A.D. (7th century). 
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Role in Islam: Final prophet (seal of the prophets), recipient of the Qur’anic revelations, social and political leader in Arabia. 
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Claims: Received a new revelation (Qur’an), called people to monotheism (Tawhid), reform of Abrahamic religion as understood in 7th-century Arabia. 
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Historic significance: Founder of Islam; reshaped religious, social, and political life across a large region within a century after his death. 
Christian approach recognizes Muhammad’s historical role and the sincerity of many Muslims, while evaluating claims about divine authority and salvation from the Christian theological vantage point.
3. Comparing claims: Jesus vs Muhammad (quick comparative table)
| Question | Jesus Christ (Christian claim) | Prophet Muhammad (Islamic claim / historical role) | 
|---|---|---|
| Nature | Divine Person (Second Person of the Trinity) incarnate. (“Word became flesh”) | Human prophet, not divine; final messenger in a prophetic line. | 
| Authority | Divine authority — speaks what the Father commands (John 12:49). | Religious/political authority in Arabia; affirms Qur’an as revelation. | 
| Saving role | Unique Savior — atoning death & resurrection; only mediator to the Father. (Acts 4:12; 1 Tim 2:5) | Calls people to submission to God (Islam = surrender); salvation by faith + works/obedience; no atoning death for all humanity in Islamic doctrine. | 
| Scripture | New Covenant centered on Christ; Christians hold Bible as God’s revelation. | Qur’an (and Hadith) — seen by Muslims as final, uncreated revelation. | 
| Historical date | c. 4–33 A.D. (first century). | c. 570–632 A.D. (seventh century). | 
| Role in Christian theology | Fulfillment of Old Testament prophecy; center of salvation history. | Not part of Christian redemptive history; regarded as later prophet by Muslims. | 
4. The early Church’s witness to Jesus’ divinity and saving authority
The earliest Christians — the Apostles and Fathers — proclaimed the divinity and saving work of Jesus from the start:
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Apostolic witness: New Testament letters (Paul, John, Peter) assert Jesus’ divinity, the uniqueness of his saving death, and resurrection as decisive events of salvation history (e.g., Romans, 1 Corinthians 15, Hebrews). 
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Apostolic Fathers & early creeds: In the second century the Church articulated confessionals that name Jesus as Lord and God (e.g., “Jesus is Lord” as central creedal formula). Church Fathers like Ignatius of Antioch, Irenaeus, and Justin Martyr defend Jesus’ divine Sonship and the salvific meaning of his passion and resurrection. These claims predate Muhammad by five centuries and establish that belief in Jesus’ divinity is not a later medieval invention but the earliest Christian proclamation. 
5. How Christians understand “divine authority” and “savior”
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Divine authority in Christianity is grounded in who God is and how God reveals Himself. Christians claim Jesus speaks with God’s own authority because He is the Son of God (John 5:19–23). 
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Savior means one who removes humanity’s guilt and restores fellowship with God. In Christian doctrine, this requires a divine, perfect sacrifice (because human sin offends infinite God); only God-Christ able to accomplish it (Hebrews 1–10; Romans 3–5). 
Islam affirms monotheism and moral obedience; it teaches salvation through submission (Islam) and through God’s mercy. In Islamic theology, Jesus (ΚΏΔͺsΔ) is a prophet but not divine and not the atoning Savior in the Christian sense. That difference is decisive for the question the user asked.
6. Christian theological and magisterial statements (Catholic teaching)
A few key Catholic teachings relevant here:
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Christ is God’s definitive Word and Savior. The Catechism states that Christ is the Father’s one, perfect Word; the economy of salvation centers in him (see passages around CCC §§430–431). 
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No new public revelation after Christ. The Church teaches that Christ’s revelation is complete (CCC 65): no new public revelation (i.e., new scripture or new foundational prophet) will supersede Christ. 
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Uniqueness of Christ for salvation. The Church teaches that salvation comes through Christ (CCC 849–850 and surrounding paragraphs discuss how non-Christians may be linked to salvation by grace, but that Christ is the unique Savior). 
(These CCC references summarize long-standing doctrinal principles: Christ’s unique role, the finality of the revelation in him, and the Church’s affirmation of him as the way to the Father.)
7. Historical and apologetic arguments for Jesus’ unique status
A. Fulfillment of prophecy and continuity with Israel
Christian claim: Jesus fulfills Old Testament messianic expectations (e.g., Isaiah 53, Psalms of the Suffering Servant) in ways that a later prophet cannot retroactively fulfill. The early Christian community interpreted these prophecies as pointing to Jesus and found in his life, death, and resurrection their fulfillment.
B. Resurrection as historical pivot
Christian apologetics stresses the resurrection as the historically decisive event that confirms Jesus’ claims (see 1 Corinthians 15). It is the crucial piece that marks Jesus’ authority as divine in Christian theology. Muhammad’s mission does not include an event comparable in Christian theology that verifies a divine identity or salvific work on behalf of all humanity.
C. Apostolic witness and institutional continuity
Christianity grounds authority in apostolic witness and succession (the apostles’ teaching handed down). The early, continuous identification of Jesus as divine in creeds and worship supports the claim that belief in Jesus’ divinity and saving role is original to Christianity, not a later innovation.
8. What about Muslim arguments — and how Christians respond?
Muslims may argue: (1) Jesus was a great prophet but not divine; (2) the Bible was corrupted; (3) Muhammad brought the final, perfected revelation.
Christian responses in brief:
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(1) Jesus’ own claims and early Christian worship (calling him Lord, praying to him) point to a unique self-understanding and reception by his followers incompatible with merely a human prophet. Biblical texts record Jesus forgiving sins, accepting worship, claiming pre-existence — acts a mere prophet would not claim. 
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(2) Textual history of the Bible: while the Church acknowledges human transmission and variants, mainstream historical scholarship demonstrates the essential reliability of the New Testament’s core claims (e.g., resurrection narratives). 
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(3) Muhammad as prophet: Christianity respects Muhammad as a historical religious figure but rejects the theological claim that his revelation supersedes or corrects the definitive revelation in Christ. 
Important: respectful dialogue recognizes sincere piety of many Muslims and the shared moral and monotheistic foundations, while also holding to the Christian conviction about Christ’s uniqueness.
9. Development / timeline (condensed)
| Date | Event | 
|---|---|
| c. 4–33 A.D. | Life, death, and resurrection of Jesus; origin of Christianity. | 
| 1st–3rd c. | Apostolic witness, early creeds, Church Fathers defend Jesus’ divinity and atoning work. | 
| 7th c. (610–632) | Muhammad’s prophetic mission; Qur’an compiled after his death. | 
| Medieval–modern | Christian-Muslim encounters, theological dialogues, and apologetics develop. | 
This timeline shows Christianity’s foundational claims and early formation predate Islam by several centuries. 
10. Comparative table — theological core claims
| Topic | Christianity (Jesus) | Islam (Muhammad) | 
|---|---|---|
| Core claim | Jesus is God incarnate; Redeemer by his death & resurrection | Muhammad is God’s final prophet; Qur’an final revelation | 
| Authority basis | Divine identity + resurrection + apostolic witness | Qur’anic revelation + Muhammad’s prophetic office | 
| Means of salvation | Grace through faith & Christ’s atonement; Church sacraments (in historic Christianity) | Submission, faith, good works; God’s mercy | 
| Role for Jesus | Savior, Judge, Mediator | Prophet, Messiah (in Islamic sense), but not divine | 
| Continuity | Fulfillment of Israel’s promises | Claims to restore pure monotheism and correct previous communities | 
11. Scholarly & historical resources (select bibliography)
(These are standard works readers can consult for deeper study — widely used in university and church settings.)
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N. T. Wright, Jesus and the Victory of God — on Jesus’ self-claim and resurrection. 
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John P. Meier, A Marginal Jew — historical study of Jesus. 
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A. J. Droge, Jesus and the Politics of Roman Palestine — cultural context. 
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John L. Esposito, Islam: The Straight Path — constructive overview of Islamic origins. 
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Alister McGrath, Christian Theology — systematic presentation of Christian claims. 
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For Catholic magisterial teaching: Catechism of the Catholic Church, especially paragraphs on Christology and revelation. 
12. Pastoral and dialogical note (how to speak about this respectfully)
A few practical guidelines:
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Respectful honesty. Speak truthfully but charitably. Avoid caricatures; recognize the faith and devotion of millions of Muslims. 
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Focus on evidence and witness. Christians should explain why they believe Jesus is divine, with careful use of Scripture and historical arguments. 
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Engage, don’t denigrate. Productive interreligious dialogue recognizes differences but seeks mutual understanding and the common good. 
13. Conclusion — apologetic summary
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Christianity claims a unique, historical, and theological center: Jesus Christ — God-with-us, who by his life, death, and resurrection reveals God definitively and accomplishes the one saving act for humanity. Biblical testimony, apostolic preaching, and the earliest Church Fathers attest to this claim from the beginning. 
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Muhammad is a major historical religious figure and the prophet of Islam; Muslims rightly revere him. From a Christian theological perspective, however, Muhammad does not possess divine personhood, and Islamic teachings do not present a substitutionary atoning death and resurrection that Christianity insists are necessary for the forgiveness of sins for all mankind. 
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Therefore, in Christian apologetics and doctrine, Jesus Christ — not Muhammad — is the one who holds divine authority as God incarnate and is the Savior of humanity. 
READ ALSO:
- Does the Bible Have Contradictions? Which Came First: The Bible or the Quran?
- Which Came First: Islam or Christianity? A Historical and Theological Analysis

 
 
 
 
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