Someone might say, “All religions are fundamentally the same and superficially different.” Many have pointed out to the contrary, “No, all religions are really superficially the same and fundamentally different” (1). Such is the case with Islam and Christianity.
On the surface level some things seem similar. Both claim to believe in the God of Abraham. Both claim to believe in the person of Jesus Christ, in his virgin birth, sinlessness and ability to perform miracles. Islam claims to recognize the Christian Bible at some level.
Yet when the doctrines of each of these religions are compared at any depth, it is easy to see that they do not teach the same thing. The God of the Bible and Allah of the Qur’an are not the same God. Islam denies the most fundamental doctrines of Christianity, namely the Trinity, the work of Christ on the cross, and salvation by faith. The Qur’an also claims to nullify the Bible, the very Word of God. While Islam and Christianity do hold some vague similarities, they are fundamentally different in their beliefs.
(1) E.g. Ravi Zacharias in many of his Let My People Think broadcasts. These can be found and listened to at rzim.org
Also of Interest: Did Jesus Foretell Muhammad?