In our final episode of the season, we wrap up our theme of Empires of Faith. We start out with some shout outs and then present a brief timeline of the Roman and Byzantine Empire. We discuss the Romanization of Christianity and the Christianization of the Roman Empire. We talk about Constantine with the imperial intervention into theology through the Council of Nicea. We examine how the intersection of empire and religion produces an orthodoxy enforced by force. We link this to the transformation of the “martyr” from one who faces violence to soldiers to carry out violence. We explore the relationship between orthodoxy, heresy, and violence in the creation of an imperial religious identity. When then discuss the emergence of the Sassanian Empire and the establishment of Zoroastrianism as the official religion of the empire. We mention Mani and Manichaeism briefly before focusing on the relationship between the monarchy and the Zoroastrian clergy in producing legitimacy. Finally we explore how the imperial orthodoxy at the heart of both the Byzantine Empire and Sassanian Empire is deployed in the territorial Byzantine-Sassanid War.