Jinger Duggar’s been busy promoting her new book, which drops on January 31, and that means she’s spilling the beans about some of her controversial family’s religious convictions. It appears Jinger thinks her sister Jana has a spiritual reason for continuing to live at home at 33. If true, it paints a sad picture of what goes on behind closed doors at the Duggar compound

While chatting with Allie Beth Stuckey, Jinger broke down some of the details surrounding controversial Institute in Basic Life Principal’s family hierarchy. According to Jinger, the teachings describe an “umbrella of authority” within families, putting the patriarch as the head of the house.