In Chapter 3, you can find a Cultist's journal describing the execution of a traitor. The journal recounts one of their number was quiet as they walked one day and then suddenly asked if they were really doing the right thing. The leader had her stripped and tied between two trees, and whipped her until flesh hung from her back. She cried out for forgiveness and he was considering letting her live, until she begged for Illmater to help her. The leader then cut out her heart and burned it as a sacrifice.