“Reformer, scholar, teacher, pastor, husband, father, composer, prayer warrior–all these labels depict Martin Luther. Yet Luther was also a preacher–and a prolific one at that. . . . Generally, he averaged three sermons per week throughout his adult life, but often preached four or more. Luther was, to state it mildly, a homiletical force” (Eds. Keith Willhite and Scott M. Gibson, The Big Idea of Biblical Preaching, 31).