With only a few weeks before his death, Joseph Smith, Jr. affirmed:

“When did I ever teach anything wrong from this stand? When was I ever confounded? I want to triumph in Israel before I depart hence and am no more seen. I never told you I was perfect; but there is no error in the revelations which I have taught. Must I, then, be thrown away as a thing of naught?”

Joseph Smith, Jr. – 2 May 1844. See Joseph Fielding Smith/Editor, The Teachings of the Prophet Joseph Smith (Salt Lake City, UT: Deseret Book Company, 1976), 368. See also D.H.C. 6:363-367.