George Q. Cannon,
Journal of Discourses — Volume 26…
“ There is no power anywhere in existence that can invalidate the force, the efficacy, or that can prevent the fulfillment of that promise when it is pronounced upon a man and woman by the authority of the Holy Priesthood—that is, there is no power but that which they themselves can exercise. It is a remarkable fact, that there is no blessing that God has promised unto us that any human being, that any angel, or any devil can take from us. There is no power of that kind that can take it from us. But a man himself, by sinning, can rob himself of his blessing ”
