The introduction identifies the central questions of the book and provides a basic orientation to the major figures and time period. The Christological controversies have long held an important place in the history of early Christianity, and strong evidence suggests that these quarrels affected all levels of society. This work argues that preaching served as a means of communicating Christological concepts to broad audiences in late antiquity. The homilies of Jacob of Serugh have long resisted efforts of historical contextualization and serve here as a case study for the role of sermons in spreading Christological doctrine. A brief account of Jacob’s life drawn from contemporaneous works establishes the basic characteristics of his time. A summary of the long debate over Jacob’s Christological perspective follows and leads into the structure of the monograph.