The Koran quite literally says that it’s from the same god you’ve been hearing about from the Jews and Christians. It’s full of passages like “We told you once, and you didn’t listen. We told you twice and you didn’t listen. This time is FOR REAL OR YOU’RE BURNING IN HELL.” I think it’s pretty key to the success of Islam that it doesn’t purport to create a whole new deity. It’s just supposed to be the latest update from the existing one. Just like Christianity doesn’t claim to be a different god than Judaism. I wonder if Jews look at Christians and Muslims the way Christians look at Mormons: these weird fuckers who made up their own bizarre amendments and are now following them.