@RC1138Boss Yeah, it makes sense too.
After all, with the worship of Gracefeel having gone down as much as it has, it's very likely that almost no one understand anymore what the Goddess of the Flame is really about. They ask about it and are likely just told that she handles the souls of the deceased toward new lives (reincarnation). That however is just one aspect of her divine sphere.
And it also makes sense for a Bishop (an incredibly high ranked member of the Church (of all Good-aligned Gods, even if he personally follows a specific one)) to know about the true meaning of the teachings of all of the gods, even those whose influence has gone down.
Heck, it's likely that most of the people who do still swear by Gracefeel don't use the exact same terminology as the one used centuries prior(the same one used by Will here). Someone aiming for a scam wouldn't be knowledgeable about such lost teachings. So the Bishop immediately saw Will as a true priest of Gracefeel. It's even more telling with him asking if the other priest was deaf for not understanding the meaning of what Will said.
I think it'd make sense for there to be ancient records of the divine teachings of all the gods in the "HQ"(so to say) of the Church, which is likely where this Bishop received his rank.
I really like that moment.