Under the Sun of Satan (1987) review

Or, It's Hard to Be a God.  New priest Donissan (Gérard Depardieu) is having a crisis of faith (he engages in self-flagellation and doubts his "talents") and asks his superior Menou-Segrais (Pialat) to be transferred, so he's sent to Campagne - on the way there he's taunted by a vagrant who's actually the Devil, and then meets Mouchette (Sandrine Bonnaire), who "accidentally" killed her lover (and got away with it).  Although it's a little wordy (show, don't tell!) and somewhat affected, it's also completely austere and brooding, with Depardieu in a state of near-constant torture - which is exactly what one would expect from an adaptation of a Georges Bernanos novel.  There appears to be a warning in there about the dangers of extremism on both spiritual and Earthly dimensions: neither Donissan nor Mouchette meet a "good end."