11 Nevertheless neither is the man without the woman, neither the woman without the man, in the Lord.
19 And again, verily I say unto you, if a man marry a wife by my word, which is my law, and by the new and everlasting covenant, and it is sealed unto them by the Holy Spirit of promise, by him who is anointed, unto whom I have appointed this power and the keys of this priesthood; and it shall be said unto them—Ye shall come forth in the first resurrection; and if it be after the first resurrection, in the next resurrection; and shall inherit thrones, kingdoms, principalities, and powers, dominions, all heights and depths—then shall it be written in the Lamb’s Book of Life, that he shall commit no murder whereby to shed innocent blood, and if ye abide in my covenant, and commit no murder whereby to shed innocent blood, it shall be done unto them in all things whatsoever my servant hath put upon them, in time, and through all eternity; and shall be of full force when they are out of the world; and they shall pass by the angels, and the gods, which are set there, to their exaltation and glory in all things, as hath been sealed upon their heads, which glory shall be a fulness and a continuation of the seeds forever and ever.
Elder Scott on the completeness of man and woman.
Marriage allows these different characteristics to come together in oneness—in unity—to bless a husband and wife, their children and grandchildren. For the greatest happiness and productivity in life, both husband and wife are needed. Their efforts interlock and are complementary. Each has individual traits that best fit the role the Lord has defined for happiness as a man or woman. When used as the Lord intends, those capacities allow a married couple to think, act, and rejoice as one—to face challenges together and overcome them as one, to grow in love and understanding, and through temple ordinances to be bound together as one whole, eternally. That is the plan. (“The Joy Of Living The Great Plan Of Happiness” Richard G. Scott Ensign, Nov. 1996, 73–75)
President Hinckley on the formation of woman as supreme act of creation.
Woman is God’s supreme creation. Only after the earth had been formed, after the day had been separated from the night, after the waters had been divided from the land, after vegetation and animal life had been created, and after man had been placed on the earth, was woman created; and only then was the work pronounced complete and good.
Of all the creations of the Almighty, there is none more beautiful, none more inspiring than a lovely daughter of God who walks in virtue with an understanding of why she should do so, who honors and respects her body as a thing sacred and divine, who cultivates her mind and constantly enlarges the horizon of her understanding, who nurtures her spirit with everlasting truth. (President Hinckley, “Our Responsibility to Our Young Women,” Ensign, Sept. 1988, 11.)
Similarly, Joseph Smith, on how church was not complete until RS was form.
Sarah Granger Kimball recalled that shortly before the Prophet Joseph Smith organized the Relief Society, he said: “I will organize the women under the priesthood after the pattern of the priesthood. … The Church was never perfectly organized until the women were thus organized.” (Quoted in Sarah Granger Kimball, “Auto-biography,” Woman’s Exponent, Sept. 1, 1883, p. 51.)
Elder Nelson on Eternal Marriage:
When a family is sealed in the temple, that family may become as eternal as the kingdom of God itself.
Such a reward requires more than a hopeful wish. On occasion, I read in a newspaper obituary of an expectation that a recent death has reunited that person with a deceased spouse, when, in fact, they did not choose the eternal option. Instead, they opted for a marriage that was valid only as long as they both should live. Heavenly Father had offered them a supernal gift, but they refused it. And in rejecting the gift, they rejected the Giver of the gift.
One strong sentence of scripture clearly distinguishes between a hopeful wish and eternal truth: “All covenants, contracts, … obligations, oaths, vows, … or expectations, that are not made and entered into and sealed by the Holy Spirit of promise, of him who is anointed, both as well for time and for all eternity, … are of no efficacy, virtue, or force in and after the resurrection from the dead; for all contracts that are not made unto this end have an end when men are dead.”
These truths are absolute. (Russell M. Nelson, “Celestial Marriage,” Ensign, Nov 2008, 92–95)
Agency is Eternal, Brigham Young
This is a law which has always existed from all eternity, and will continue to exist throughout all the eternities to come. Every intelligent being must have the power of choice (Discourses of Brigham Young, sel. John A. Widtsoe , 62).