(Isaiah 14:12-15) Talks a bit about the fall of satan. He was reportedly the most beautiful angel who let pride get the best of him. He decided to exalt himself above God and so was cast out of heaven. I don't think God CREATED evil, but I think he ALLOWED evil. I don't think God wanted us as a bunch of Robots who would come to him because we had no other choice; rather he allowed evil so that we could choose where we want to go and what we want to believe. He gave us free will to make our choices. I am really glad we have the choice rather than to do something because there is no other choice. How else could we possibly know the true grace and mercy of God and all the blessings we receive from him as we obey. Hope this helps a bit?