What are the key theological differences between Christianity and Islam?
The theological divide between Christianity and Islam centers on several foundational doctrines that shape how each faith understands God, humanity, and salvation. God’s Nature and Identity Christians express God’s oneness as a divine threeness, while Muslims insist upon a consistent monotheism 1 . Islam presents a God who is “ultimately a God outside of the world, a God who is only Majesty, never Emmanuel, God-with-us” 2 —a conception fundamentally at odds with Christian theology. Additionally, while both traditions affirm God’s mercy, the Bible emphasizes his grace and love in ways that make salvation as a divine gift incomprehensible within an Islamic framework 3 . Christ’s Identity and Redemptive Work The person and work of Jesus represent the sharpest theological divergence. For Christians, Jesus embodies the incarnation of God, the second member of the Trinity, and the sacrificial atonement for humanity’s sins, whereas Muslims regard trinitarianism as blasphemy and interpret “son...