What becomes of the wicked? Hell--exile from God, subjection to fire, worms, and darkness--for centuries the idea has shaped the dread of malefactors, the solace of victims, and the deterrence of believers. Although we may associate the notion of hell with Christian beliefs, its gradual emergence depended on conflicting notions that pervaded the Mediterranean world more than a millennium before the birth of Christ. Asking just why and how belief...