The goal of this seminar will be to introduce students to some of the most important ideas and debates surrounding the two major religious revolutions of Late Antiquity: the triumph of Christianity and the subsequent emergence and world conquests of Islam. The course will focus on extensive reading in both primary and secondary literature and students will be introduced to and trained in using major instrumenta studiorum for this period; texts may also be read in Greek, Syriac, and Arabic. No prior knowledge of Late Antiquity, Christianity, or Islam will be assumed.