“What a thing it is for a man to be accused of committing adultery, and having seven wives, when I can only find one. I am the same man, and as innocent as I was fourteen years ago; and I can prove them all perjurers.”
—Joseph Smith (History of the Church, May 26, 1844, p. 441). At the time, Joseph Smith had married over 30 wives besides Emma Smith.

“God is in the still small voice. In all these affidavits, indictments, it is all of the devil–all corruption. Come on! ye prosecutors! ye false swearers! All hell, boil over! Ye burning mountains, roll down your lava! for I will come out on the top at last. I have more to boast of than ever any man had. I am the only man that has ever been able to keep a whole church together since the days of Adam. A large majority of the whole have stood by me. Neither Paul, John, Peter, nor Jesus ever did it. I boast that no man ever did such a work as I. The followers of Jesus ran away from Him; but the Latter-day Saints never ran away from me yet…”
—Joseph Smith (History of the Church, vol. 6, p. 408-409). Click here to see this quote in context.

“God said, “Thou shalt not kill;” at another time He said “Thou shalt utterly destroy.” This is the principle on which the government of heaven is conducted—by revelation adapted to the circumstances in which the children of the kingdom are placed. Whatever God requires is right, no matter what it is, although we may not see the reason thereof till long after the events transpire. If we seek first the kingdom of God, all good things will be added. So with Solomon: first he asked wisdom, and God gave it him, and with it every desire of his heart, even things which might be considered abominable to all who understand the order of heaven only in part, but which in reality were right because God gave and sanctioned by special revelation.”
—Joseph Smith (History, 1838–1856, volume D-1 [1 August 1842–1 July 1843])