Professor at St. Paul's College, Concordia, Missouri, 1912â€“21; Concordia Seminary, St. Louis, 1921â€“57; on leave of absence to establish a pastoral training program for the Evangelical Lutheran Church of England 1956â€“57. Editor of Magazin fÃ¼r Ev.-luth. Homiletik und Pastoraltheologie 1924â€“26; Theological Monthly 1926â€“30; coeditor Concordia Theological Monthly 1930â€“38; managing editor 1938â€“49; coauthor, Popular Symbolics; collaborator, A Greek-English Lexicon of the New Testament, a translation and adaptation of W. Bauer's Griechisch-Deutsches WÃ¶rterbuch. Other works include Does the Bible Contradict Itself? â€œSiehe, ich stehe vor der TÃ¼r!â€ Bible Difficulties; Christian Prayer; Fundamental Christian Beliefs; New Testament History; The Life of St. Paul; From the Nile to the Waters of Damascus; Bible Commentary: The Gospel According to St. Luke.