Did you know that all messengers since Adam have preached one and the same religion? And that the rites of religion Islam as we know them today were not founded by the prophet Muhammad but by the prophet Abraham?
You are probably shaking your head saying, "No, that isn't right." To understand this better, let us examine what does the religion "Islam" mean. "Islam" is not a name, it is a description meaning total Submission to God. Submission to God, i.e., commonly known as the religion Islam, is the religion whereby we recognize God's absolute authority, and reach an unshakeable conviction that God ALONE possesses all power; no other entity possesses any power that is independent of Him. The natural result of such a realization is to devote our lives and our worship absolutely to God ALONE. This is the First Commandment in all the scriptures, including the Old Testament, the New Testament, and this Final Testament.
For more information, please see Introduction to the Quran and the religion Islam