Islam and Christianity: Core Differences
Where do Islam and Christianity genuinely disagree, and how should Christians discuss the differences?
How to use this guide
This guide is built for a 45-60 minute small-group conversation about "Islam and Christianity: Core Differences." Open with prayer, read the framing aloud, and use the questions below to surface what people actually think before you walk through the case. Aim for honest engagement over consensus.
Facilitator tips
- Read the lesson before the meeting; you do not need to be an expert, just a guide.
- Resist the urge to fill silence. The best discussions follow long pauses.
- When someone raises an objection you cannot answer, write it down and follow up next week.
- Close with a single takeaway from each member, not a doctrinal summary.
What we're studying
Islam and Christianity share some surface vocabulary (monotheism, prophets, final judgment) but diverge sharply on God's nature, the identity of Jesus, human need, and historical claims. Charitable engagement — exemplified by Nabeel Qureshi — gets past caricature to substantive differences worth taking seriously.
The case in brief
Four pivot points: (1) God's nature. Islam teaches strict unipersonal monotheism (tawhid); Christianity teaches triune monotheism (one God in three persons). (2) Jesus. Islam accepts Jesus as a prophet and born of a virgin but denies his crucifixion (Quran 4:157-158), his divinity, and his resurrection. Christianity anchors everything on these. (3) Salvation. Islam teaches submission and scales of works; Christianity teaches grace through faith. (4) Scripture and history. Islam claims the Quran as uncorrupted revelation superseding the Bible; Christianity claims historical reliability for the Gospels, which contradict the Quran on the crucifixion. The historical question — did Jesus die on the cross? — is where the two religions put forward incompatible factual claims.
What if someone says...
"Muslims accept the Quran as divine revelation overriding historical evidence."
But the case for the Quran as divine revelation depends on prior historical claims (Muhammad as final prophet, preservation of Quranic text) that themselves admit historical examination. If history matters for Christianity, it matters for Islam.
"The Trinity is logically incoherent: 1 + 1 + 1 = 3, not 1."
The doctrine does not assert that one person equals three persons (incoherent), but that one being subsists as three persons (distinct claim; logically available even if mysterious).
Discussion questions
- Which difference between Islam and Christianity strikes you as most significant?
- How should the crucifixion evidence weigh when comparing the two faiths?
- What postures help a Christian have this conversation with Muslim friends?
- [Small group] Where in your own life does this question feel most pressing?
- [Small group] Who do you know that wrestles with this — and how could you talk with them about it this week?
Going deeper
- No God but One: Allah or Jesus?Nabeel Qureshi · 2016 · Comparative religion
- The Case for the Resurrection of JesusGary Habermas & Michael Licona · 2004 · Resurrection
- The Resurrection of the Son of GodN.T. Wright · 2003 · Resurrection
- Reasonable FaithWilliam Lane Craig · 2008 (3rd ed.) · Natural theology