See, how I fantasy booked it in my head, was that this was going to somewhat reboot Bray's character. Where he was going to start going back into talking more like a cult leader (spouting out Sister Abigal's lessons, like his fantastic Ms Teacher Lady Promo), less like a Mad Libs Demi God.
Have it where theres some sense in the story, where he realizes the "demon" is the man, not some super natural mumbo jumbo, taking from what Finn said last month. A weird Bray Wyatt way of saying he's going back to her teachings, not chasing immortality, the dragon, or the super natural demi gods of yester year.
So essentially this Sister Abigal stuff is just also metaphorical mumbo jumbo, but its mumbo jumbo that ends the mumbo jumbo.