Rome had not fallen to a foreign enemy in eight hundred years. When the Visigoths under Alaric entered and plundered the city in 410, the shock ran through the empire. Some blamed the Christians: Rome had abandoned its old gods, and disaster had followed.
Augustine, bishop of Hippo in North Africa, answered the charge in a vast work, The City of God. He distinguished two cities — the earthly city, built on love of self, and the City of God, built on love of God — intermingled in history but bound for different ends.
Rome's fall taught the Church a lesson it would need again: no earthly city is eternal. The Christian's hope is not in the survival of an empire but in the city that comes down from God.
