Canadish said:
Perhaps a Cleric? Being gifted powers is certainly proof enough of a gods existence, so that's the real world problem out of the way.
I suspect it would cause more problems than you might think.
Sure you can pray for spells, which handily serves to confirm your faith in your god, but
so can everybody else. And that's not just talking relatively benign mainstream stuff, either. Even people with really horrible and repugnant beliefs - they've got some divine backing in their corner as well.
In the face of that sort of situation, religious strife doesn't evaporate it gets justified.