"The only men who become Gods, even the Sons of God, are those who enter into polygamy. ...I heard the revelation on polygamy, and I believe it with all my heart, and I know it is from God..."
LDS President and Prophet Brigham Young, Journal of Discourses, Vol. 11, p. 269, August 19, 1866.

"Now, where a man in this church says, 'I don't want but one wife, I will live my religion with one,' he will perhaps be saved in the Celestial kingdom; but when he gets there he will not find himself in possession of any wife at all. He has had a talent that he has hid up. He will come forward and say, 'Here is that which thou gavest me, I have not wasted it, and here is the one talent,' and he will not enjoy it but it will be taken and given to those who have improved the talents they received, and he will find himself without any wife, and he will remain single forever and ever."
LDS President and Prophet Brigham Young, Deseret News, September 17, 1873.

"Brother Cannon remarked that people wondered how many wives and children I had. He may inform them, that I shall have wives and children by the million, and glory, and riches and power and dominion, and kingdom after kingdom, and reign triumphantly,"
LDS President and Prophet Brigham Young, Journal of Discourses, vol. 8, p. 178.

"Supposing that I have a wife or a dozen of them, and she should say, 'You cannot be exalted without me,' and suppose they all should say so, what of that? . . . Suppose that I lose the whole of them before I go into the spirit world, but that I have been a food, faithful man . . . do you think I will be destitute there. No, the Lord says there are more there than there are here . . . there are millions of them. . . . we will go to brother Joseph (Smith - ed.) and say, 'Here we are brother Joseph; we are here ourselves are we not, with none of the property we possessed in our probationary state, not even the rings on our fingers"' He will say to us, 'Come along, my boys, we will give you a good suit of clothes. Where are your wives?' 'They are back yonder; they would not follow us.' 'Never mind,' says Joseph. 'Here are thousands, have all you want,'"
LDS First Presidency Heber C. Kimball, Journal of Discourses, vol. 4, p. 209.

"When our father Adam came into the garden of Eden, he came into it with a celestial body, and brought Eve, one of his wives with him," LDS President and Prophet Brigham Young, Journal of Discourses, vol. 1, p. 50.

"The Scripture says that He, the Lord, came walking in the Temple, with His train; I do no know who they were, unless His wives and children . . ." LDS President and Prophet Brigham Young, Journal of Discourses, vol. 13, p. 309.

"We have clearly shown that God the Father had a plurality of wives, one or more being in eternity, by whom He begat our spirits as well as the spirit of Jesus His first Born, and another being upon the earth by whom He begat the tabernacle of Jesus (Mary - ed.), as his only begotten in the world. We have also probed most clearly that the Son followed the example of his Father, and became the great Bridegroom to whom kings' daughters and many honorable wives were to be married. We have also proved that both God the Father and our Lord Jesus Christ inherit their wives in eternity as well as in time . . . If you do not want your morals corrupted, and your delicate ears shocked and your pious modesty put to the blush by the society of polygamists and their wives, do not venture near the New Earth; for polygamists will be honored there, and will be among the chief rulers in that Kingdom,"
LDS Apostle Orson Pratt, The Seer, p. 172.

"If none but Gods will be permitted to multiply immortal children, it follows that each God must have one or more wives,"
LDS Apostle Orson Pratt, The Seer, p. 158

"I bear my solemn testimony that plural marriage is as true as any principle that has been revealed from the heavens. I bear my testimony that it is a necessity, and that the Church of Christ in its fulness never existed without it. Where you have the eternity of marriage you are bound to have plural marriage; bound to; and it is one of the marks of the Church of Jesus Christ in its sealing ordinances,"
LDS Apostle George Teasdale, Journal of Discourses, vol. 25, p.21.

"Some people have supposed that the doctrine of plural marriage was a sort of superfluity, or non-essential to the salvation of mankind. In other words, some of the Saints have said, and believe that a man with one wife, sealed to him by the authority of the Priesthood for time and eternity, will receive an exaltation (attainment to godhood - ed.) as great and glorious, if he is faithful, as he possibly could with more than one. I want here to enter my protest against this idea, for I know it is false. . . . Therefore, whoever has imagined that he could obtain the fullness of the blessings pertaining to this celestial law, by complying with only a portion of its conditions, has deceived himself. He cannot do it. . . . it is useless to tell me that there is no blessing attached to obedience to the law, or that a man with only one wife can obtain as great a reward, glory or kingdom as he can with more than one,"
LDS President and Prophet Joseph F. Smith, Journal of Discourses, vol. 20, pp. 28-31.

"Plural marriage is a pattern of marriage designed by God as part of His plan of eternal progress (the eternal progression and birthing of spirits in the future world - ed.) to further His kingdom and exalt (to godhood - ed.) His children,"
John J. Stewart, Brigham Young and His Wives, 1961, p. 71.