Cool as hell! I'd never seen before a devil drawn in this kind of religious wear. There's none of the overblown juxtaposition of fiery brimstone red fur and gaudy gold jewelry you might get from other art of religious coded demons. Don't get me wrong, I love cheesy, exaggerated art, but this sustains a far more uncanny effect.
It genuinely feels like a stately, heavily religious painting from the middle ages. His robes and sad look make him transfixing, telling so much about him while he remains a mystery. Is he a kindly priest or a brainwashed cultist? All I know is he's devout.