well all 3 abrahamic religions, Judaism and Christianity, all came from prophets we muslims believe in.. We know God.Allah, sent numerious prophets, something like 170,000 to earth during each time and to all the groups of peoples around the world... People kept records and some didnt.. Most didnt.. the great prophets Moses, Jesus, David, Solomon, Jonah, Lot, NOah , etc are all prophets of Islam... Gods message is the same from day one to Adam and will be the same to the last human standing,, so we believe all the prophets brought the same message from God,. just human fault changed it.. So finally God sent the Quran down though Angel Gabriel to Mohammed to spread to humanity... God promiced this time to preserve it.... Islam is all the true religions cleaned up..