[Cult] Cthulhu will devour everyone!

That's not true. First, the inquisitors spend a long time asking the accused to show the mark of the unholy on their body, and even after lengthy persuasion (read: torture), if the victim refuses, they say, "Let the Lord punish you as we forgive you" (usually, the naive victim thinks they will be released), but that's not the case, and now they are burned at the stake.

Yeah, I find the methods of the Inquisition amusing. If a victim confesses under torture, then they are guilty and must be burned. If they don't confess, then the power of the Devil over them is so great that it gives them the strength to endure such torture, so they must be burned too....
That's why you should join us! The Inquisition is evil, but Cthulhu is good! He will destroy the Inquisition! He will protect you!