What the hell is wrong with YOU? Aside from the obvious hypocracy, um... are you trying to create a murder-suicide situation in your house? He can't control himself due to a developmental disorder, and you want to lay a bunch of religious guilt on his shoulders too? Please stop this nonsense before someone gets hurt.
I'm trying to prevent a murder-suicide. He has proven to everyone that he can control himself. His therapist agrees. He doesn't want to all the time because there is no reason we can give him to.