Muhammad used to listen to Jews talk about their religion and thought. "Hey I can make some money, gain power, glory and have lots of sex with this religion."<quoted text>
I have read the Koran. And I see where Mohammad used the bible to suit his purpose, but if you'd read it you'd see where he got his stories mixed up, his history wrong, and his facts all messed up.
And you can call them what you want.
Thus Islam was born.