It appeared to work with the man near 2k or 6k pigs can’t remember on the girl when Paul cast her demon out
Well, Jesus did that one and the man became a Christian. That would have prevented the demon from coming back with reinforcements as the house, while swept clean, would no longer be empty.
We don’t know what eventually happened to the girl Paul cast the demon out of. Did she convert or end up in worse shape than before?
I’m not saying that it’s not possible to cast a demon out of someone like that, but unless they are ready to repent and be saved, it will do them no favors.