This subject gives a survey of major developments in the history of Christian Churches, and promotes training in the use of primary documents. Students will study the church in imperial Rome, including the Apostolic Fathers and the challenge of Judaism; the Apologists and the challenge of Gnosticism, the Christian Empire; and the ecumenical councils and the challenge of Arianism and Augustine. The Church as Christendom is explored, including the Holy Roman Empire; medieval theology; conciliarism; and mysticism, as well as the precursors to the Reformation including Hus; Wycliffe; Luther and Calvin.