I have no idea why so many viewers aren't understanding the thread between Mulder and Scully's central episodes. Personally I think this is one of the strongest Scully Faith episodes I've seen so far. Rather than dealing with just blind faith or some weird exorcism or something, Scully actually witnesses something unbelievable and is conflicted about it. I think the central framing of this episode being told retrospectively through a confessional helps square Scully's behavior with her existing characterization as "the skeptical one". Obviously constantly writing Scully as "the skeptical one" would be insanely boring which is why we're given these occasional episodes where Scully is more inclined to believe an unexplained phenomenon than Mulder is. I think the story and visual effects concerning the Seraphin are cool; I think the effects concerning the devil character are a little hokey. All-in-all though I think this is the best execution on the occasional "Scully believes Mulder doesn't" inversion episode.