Why is the killing angel Ray so obsessed with God?

Believe that you can control the world. The TV animation "Killing Angels" was adapted from the game of the same name developed by Makita Shinichi, and was announced to be animated on July 24, 20/KLOC-0. It mainly tells that Reggie Gardner is a girl of 13 years old. She woke up at the bottom of a building, but there was no clue in her mind to know where she was. At this moment, a man covered in bandages and holding a sickle suddenly jumped out in front of him. Later, there was a story of some wonderful connection between them. Killing angel ray is the rebellion of this animation. He is obsessed with God because he firmly believes that being a God can dominate everything, control the world and live forever. Finally, he was influenced by the protagonist, not killing.