In Islam, there is nothing that can lead people to atheism. There are no mysteries that can struggle the mind. There is only one God; He has created all beings and all will return to Him. He sent the same message to prophets of all nations. A simple straightforward message and one condition of salvation: Belief in One God and to unify Him in worship. It is a clear and simple concept, which even the naturalists, and atheists may find hard to reject or doubt.