854. Such are the ones who tarry there. The black [configurations] that prompt them to go off into different rooms [847], are fantasies, which they get rid of one by one; for that is the purging process some undergo, and indeed, it can take a long time. If they fail to get rid of them, something violent slips in and strikes terror, so that whenever they go back to the same fantasies, they are secretly frightened, and thereby also purged. But those who think it is calm there [843], and who love such dwellings, are purged the most slowly.