In his April 2012 General Conference Talk, "The Doctrine of Christ," D. Todd Christofferson of the Quorum of the Twelve said the following which is further disproof of the claim LDS leaders claim infallibility:
At the same time it should be remembered that not every statement made by a Church leader, past or present, necessarily constitutes doctrine. It is commonly understood in the Church that a statement made by one leader on a single occasion often represents a personal, though well-considered, opinion, not meant to be official or binding for the whole Church. The Prophet Joseph Smith taught that “a prophet [is] a prophet only when he [is] acting as such.”5 President Clark, quoted earlier, observed:
“To this point runs a simple story my father told me as a boy, I do not know on what authority, but it illustrates the point. His story was that during the excitement incident to the coming of [Johnston’s] Army, Brother Brigham preached to the people in a morning meeting a sermon vibrant with defiance to the approaching army, and declaring an intention to oppose and drive them back. In the afternoon meeting he arose and said that Brigham Young had been talking in the morning, but the Lord was going to talk now. He then delivered an address, the tempo of which was the opposite from the morning talk. …
“… The Church will know by the testimony of the Holy Ghost in the body of the members, whether the brethren in voicing their views are ‘moved upon by the Holy Ghost’; and in due time that knowledge will be made manifest.”6
Footnotes for the Above:
5. Joseph Smith, in History of the Church, 5:265.
6. J. Reuben Clark Jr., “Church Leaders’ Words,” 10. Of the story his father told him about Brigham Young, President Clark further wrote:“I do not know if this ever happened, but I say it illustrates a principle—that even the President of the Church, himself, may not always be ‘moved upon by the Holy Ghost,’ when he addresses the people. This has happened about matters of doctrine (usually of a highly speculative character) where subsequent Presidents of the Church and the peoples themselves have felt that in declaring the doctrine, the announcer was not ‘moved upon by the Holy Ghost.’“How shall the Church know when these adventurous expeditions of the brethren into these highly speculative principles and doctrines meet the requirements of the statutes that the announcers thereof have been ‘moved upon by the Holy Ghost’? The Church will know by the testimony of the Holy Ghost in the body of the members, whether the brethren in voicing their views are ‘moved upon by the Holy Ghost’; and in due time that knowledge will be made manifest” (“Church Leaders’ Words,” 10).
