I keep noticing a pattern where the priest's devotion is weaponized, and it rarely ends well. There's this intense internal conflict when their faith, which is supposed to be their shield, becomes a liability. The church sends them to cleanse a haunted forest, but the 'monsters' they find are just cursed villagers. Do they follow orders and condemn innocent souls, or betray their vows to offer mercy? That moral whiplash is brutal. I'm thinking of characters like young Father G from 'Berserk'—naive, armed with holy symbols, then utterly shattered when doctrine offers no real answers to the suffering he sees. The external conflict with secular warriors is just as good; the priest wants to save the vampire's soul while the fighter just wants to stake it. That clash between redemption and pragmatic annihilation drives some of the best party tension.
Honestly, the most chilling conflicts come from within the institution itself. The priest often uncovers that their own church is the source of the corruption, worshipping the very darkness they're supposed to fight. That moment of realization, that your whole life has been a lie serving a demonic patriarch, is a special kind of horror. It leaves them spiritually homeless, grasping for a new moral compass in a world that's literally hellish. That's when you get the best stories: the heretic forging their own path, not with less faith, but with a harder-earned, messier kind of belief.