Early Christians used charges of adultery, incest, and lascivious behavior to demonize their opponents, police insiders, resist pagan rulers, and define what it meant to be a Christian. Christians frequently claimed that they, and they alone were sexually virtuous, comparing themselves to those marked as outsiders, especially non-believers and "heretics," who were said to be controlled by lust and unable to rein in their carnal desires. True or not,...