He used to be in the Hitler Youth.
Dude, did you know the Pope used to be a Nazi?
A concept which is popular with people with power because it allows them to use the human's natural fear of the unknown against them.
Christianity, as well as other religions, was used hundreds of years ago as a tool to scare millions of people to give money to the Church thinking it would save their souls, and a way to kill hundreds of innocent people because of their alternative beliefs.
Egyption Pharaohs' priests told them that to get a good crossing into the afterlife, they would need a huge pyramid built which would cost thousands of lives to build.