Piety is a good thing. It means devotion to God. Pietism was a movement in history that started out well and inspired many missionaries and hymn writers but caused some problems when it shifted people's attention from Christ's gospel to the pietists' own acts of devotion. Learn all about it as Trinity, Sophia, and Christian discuss this important movement with  Dr. Larry Rast, president of Concordia Theological Seminary in Fort Wayne, Indiana, and professor of American Christianity and American Lutheranism.