[Heber J. Grant]
At 10 A.M. attended conference. ... Prest. Wilford Woodruff who called on [Patriarch] John Smith as the next man to him in authority in the Church to keep the Word of Wisdom or step down and out of his office. He spoke 15 minutes and said among other things if a man could not keep the commandments of God and live that he had better keep them and die.
[Diary of Heber J. Grant, http://amzn.to/newmormonstudies]