The Holy Bible, Zechariah 14:12

12 And this shall be the plague wherewith the Lord will smite all the people that have fought against Jerusalem; Their flesh shall consume away while they stand upon their feet, and their eyes shall consume away in their holes, and their tongue shall consume away in their mouth.

The Doctrine and Covenants, Section 29:19

19 And their tongues shall be stayed that they shall not utter against me; and their flesh shall fall from off their bones, and their eyes from their sockets;

Conference Report, Bruce R. McConkie, April 1979

We do not say that all of the Saints will be spared and saved from the coming day of desolation. But we do say there is no promise of safety and no promise of security except for those who love the Lord and who are seeking to do all that he commands. It may be, for instance, that nothing except the power of faith and the authority of the priesthood can save individuals and congregations from the atomic holocausts that surely shall be. And so we raise the warning voice and say: Take heed; prepare; watch and be ready. There is no security in any course except the course of obedience and conformity and righteousness.

Conference Report, Ezra Taft Benson, October 1961

The great destructive force which was to be turned loose on the earth and which the prophets for centuries have been calling the “abomination of desolation” is vividly described by those who saw it in vision. Ours is the first generation to realize how literally these prophecies can be fulfilled now that God, through science, has unlocked the secret to thermonuclear reaction.