If you want an idea of how religion impacts one with mental illness first hand I'd like to remind you all of the "Orchids" thread. Having visions/delusions and the priest said she was akin to a saint.
https://atheistforums.org/thread-36143.h...ght=orchid
https://atheistforums.org/thread-36143.h...ght=orchid
Being told you're delusional does not necessarily mean you're mental.