Conditional immortality and the unconsciousness of the dead — sometimes called soul sleep — do a great deal of work in the system. If a human being is a body animated by breath rather than a body containing a soul, then death is the end of the person until resurrection, and every doctrine of an intermediate state, of purgatory, of eternal conscious torment, and of going to heaven when you die falls away together. Christadelphians hold that only those who have known God's requirements are raised for judgment at all; the rest simply remain dead. There is no personal devil: the satan and diabolos of Scripture are read as adversary and slanderer, personifying the sinful inclination in human nature and the systems it builds. This reading is the movement's most distinctive contribution and its members will explain it at length to anyone who asks, which is the point of the public lecture programme.