Originally Posted by: Danny C.The devil was in the beginning of christianity because he convinced eve to eat the apple from the forbidden tree of knowledge because he told them they would be "like God". That is why there is a hell, Lucifer, the devil, was an angel but wanted to be better and more powerful than God and God sent him to reign in his own "kingdom", hell, seeming powerful now, but destined to fall in the end to Gods power.