Despite studying under Harnack, Holl, and old Liberalism, Sasse became a prominent figure in confessional Lutheranism by the time of World War I. A leader in the German ecumenical movement for years, he untiringly advocated that real unity could only be the result of real doctrinal agreement. He had the respect of Roman Catholics, Lutherans, Anglicans, and the Reformed alike. In his later years, Sasse believed that the Missouri...