How did a community that was largely invisible in the first two centuries of its existence go on to remake the civilizations it inhabited, culturally, politically, and intellectually? Beginning with the life of Jesus, Robert Louis Wilken narrates the dramatic spread and development of Christianity over the first thousand years of its history. Moving through the formation of early institutions, practices, and beliefs to the transformations of the Roman world after the conversion of Constantine, he sheds new light on the subsequent stories of Christianity in the Latin West, the Byzantine and Slavic East, the Middle East, and Central Asia.