"Thereby I behead no one, scourge no one with a rod; but with my mouth I whip, punish, flog, and judge. Thus Christ wields an oral sword, not a fisted one. The Word of God is the sword with which He punishes the whole world."
What Luther Says, An Anthology, 3 vols., ed. Ewald M. Plass St. Louis: Concordia Publishing House, 1959, III, p. 1478. Sermon, February 9, 1538. Isaiah 11:4.