I find it more interesting to ask how you know which one's supposed to be the good guy. God definitely has a much higher body count in the Bible, for example. If the snake in the Garden of Eden was the devil, then he told Adam and Eve the truth, too.
What if the bible really is the word of god, and god really is an omnipotent creator? It's tricky, because if he created everything, including himself, time and the space he exists in he didn't have time to get bored in, or space to be confined, but anyone with those powers is going to get bored, so I can see why he'd pass his time trying to create things. The universe would be a fun project for a while I guess. Then, to pass the time he created, he makes creatures. The dinosaurs were a prototype. Then he made people, with more talking and thinking skills. That works, but every kid has his favourite toys, so god decides to screen out some, and bring the rest to his toy room. Now, if you were that powerful, which type would you want? Would it be the sheep that read an easily falsifiable book and believe it, tugging their forelock and telling you your great, without ever thinking that as an omniscient, you know that? Or would you pick the free thinkers, that will give your grey cells some exercise? The koran, bible etc, could be gods way of screening out the sheep for the reject bin, and filling his toy room with more interesting types. I reckon that version's got more legs than the others. There's no prophet in this line of work though.
That's one of the better answers to Pascal's Wager: What if God is testing everyone to see who answers the question of his existence honestly and thoroughly? The actually answer that you get to is irrelevant. It's about the journey itself and how you come to your conclusion.
Given there was an Eden it's very biblical to believe life on earth started with just two people. Inter breeding would have eventually led to madness and weakness of the species. Great fable but scientifically no cigar.
It's a myth from similar sources to the others. For some reason they were selective about which bits they copied.