More than once, angry crowds threatened his life, especially when he ignored fears for his own safety and publicly embraced a condemned friend, a man named Plutarch, and attended his execution. So far, Origen himself escaped arrest and interrogation, probably because Severus’s persecution had targeted upper-class converts, especially Roman citizens, like Origen’s father and many of his students. Origen was protected, apparently, by having inherited from his Egyptian mother the low status Roman law accorded to native noncitizens. When Origen was twenty-six, and still teaching, writing, and interpreting the Scriptures, Septimius Severus died and was suc- SATAN’S EARTHLY KINGDOM / 137 ceeded by two sons, one of whom, Caracalla, promptly assassinated his brother Geta but left the Christians alone. For the moment the government seemed almost benign. One day in 215, during Caracalla’s reign, soldiers arrived in Alexandria with a letter from the governor of Arabia (present-day Jordan), summoning Origen to appear at the palace.