"The preaching of this message may be likened to a stone thrown into the water, producing ripples which circle outward from it, the waves rolling always on and on, one driving the other, till they come to the shore. Although the center becomes quiet, the waves do not rest, but move forward. So it is with the preaching of the Word. It was begun by the apostles, and it constantly goes forward, is pushed on farther and farther by the preachers, driven hither and thither into the world, yet always being made known to those who never heard it before, although it be arrested in the midst of its course and is condemned as heresy."
Sermons of Martin Luther, 8 vols., ed., John Nicholas Lenker, Grand Rapids: Baker Book House, 1983, III, p. 202. Ascension Day Mark 16:14-20.
