This book examines the previously unexplored sources of the eleventh-century Byzantine service of Christ the Bridegroom by locating its origins in the liturgical environment of third-century Christian Syria and Mesopotamia, and especially in the baptistry of the Christian House at Dura-Europos, as well as in the texts of the Acts of Thomas, the Gospel of Philip and the Symposium by Methodius of Olympus. More specifically, Pagoulatos analyzes the bridal initiation service (the earliest known Iconophile service) of the Dura-Europos baptistery, focusing on the role that the images played in it.