You see, where the Catholic church went wrong, in my humble opinion: they're asking the Devil questions and expecting honest answers! So one priest asks every demon what saint they hate the most in heaven, and the demons says it, and then that priest runs and gets a graven image of that saint, and waves it at the demon, and the demon starts screaming, and makes like he's exorcised!
Well done, you devil. You fooled this priest to commit idolatry. And no doubt the freshly "exorcised" person will keep a statue of that saint on their nightstand to stand guard for them. The statue of course CONTAINS yet another demon...
“What profiteth the graven image that the maker thereof hath graven it; the molten image, and a teacher of lies, that the maker of his work trusteth therein, to make dumb idols?
Still wanna step in with me Father?