The great Protestant Reformer Martin Luther is known primarily as an exegete and a preacher. He never produced a systematic theology like Aquinas' Summa or Calvin's Institutes. Nevertheless, Luther made important contributions to systematic theology. In the sixteen free video lectures below, Pastor Mark Sarver, a professor of historical theology for Reformed Baptist Seminary, highlights some of the prominent characteristics of Luther's theology, which he classifies as biblical, doxological, existential, and dialectical. Then he surveys several of the major theological topics that Luther developed, including the knowledge of God, Scripture, human sin, predestination, and justification. These lectures serve as part of the curriculum for our historical theology course entitled "Reformation Church."