Its silly to believe there's a god out there who created a universe of infinite size, or lets just say he creates infinity and then put some creatures on dot of a planet and just sits and watches 6 billion people. Why did he create Satan anyway? "Its a test" is the only answer some people come up with. So god had nothing better to do than creating some creatures and testing them for fun? What a loser. And on top of that this fictional character does sound very egotistic and self-centered. In holy books he keeps praising himself like there's no tomorrow. And then "commands"' you to praise him whether you're impressed or not.
but heck, believe what ever you want, but please, don't pass it off as facts.