The doctrine of purgatory - the state after death in which Christians undergo punishment by God for unforgiven sins - raises many questions. What is purgatory like? Who experiences it? Does purgatory purify souls, or punish them, or both? How painful is it? Heaven's Purge explores the first posing of these questions in Christianity's early history, from the first century to the eighth: an era in which the notion that sinful Christians might improve...