Christendom: The Kingdom that Changed Christianity

For hundreds of years after the death of Jesus, the people who professed to be His followers faced persecution from the Roman Empire. Then a miracle seemed to happen to this fragmented and diverse religious movement. Emperor Constantine declared that he was a Christian, and then through the following decades attempted to create a unified Christianity.

This effort to build a unified Christian church continued during Late Antiquity and the Early Middle Ages. This effort was a complex chronicle of theological debates, schisms, political intrigue, and violence, at times. The people and events intertwine with the collapse of the Roman Empire and the impact of Germanic culture on the church as well as with plagues, wars, Crusades, and repeated attempts to recreate a united Europe.

The story includes Goths, Anglo-Saxons, Franks, Italians, Spanish, Vikings, Celts, Arabs, Jews, Mongols, and others whose identities have all but disappeared. Countless individuals played their parts in the events–Augustine and his mother Monica, who hailed from North Africa; Justinian and his wife Theodora from Byzantium; Charlemagne; Mohammed; and dozens of popes, peasants, aristocrats, priests, and warriors. All of them shaped the formation of Christendom–the Kingdom of God on earth–a kingdom that changed original Christianity until it would have been in many ways unrecognizable to Jesus’ earliest followers.

Christendom: The Kingdom that Changed Christianity is a companion book to Plato’s Shadow: The Hellenizing of Christianity.