Christianity and Islam -- Are They Really That Different? There are hundreds of religions in this world. Of the many religions two of the most prominent are Islam and Christianity. It is averaged that there are 750 million people practicing Islam and another 1 billion practicing Christianity. The roots of Islam are actually in Christianity. History books indicate that one night; God by way of the angel Gabriel came to Muhammad (In Christianity this is the same Angel that brings the news of Jesus' birth.). The message Muhammad received was that there was but one God, not many gods, as most Arabs believed. This God was creator of the world (In Christianity, it's documented