Spencer W. Kimball
"God requires chastity. We stand for a life of cleanliness. From childhood through youth and to the grave, we proclaim the wickedness of sexual life of any kind before marriage, and we proclaim that everyone in marriage should hold himself or herself to the covenants that were made.
"In other words, as we have frequently said, there should be total chastity of men and women before marriage and total fidelity in marriage. The fact that so-called sex revolutionists would change the order and change the status is repugnant to us. We abhor, with all our power, pornography, permissiveness, and the so-called freedom of the sexes, and we fear that those who have supported, taught, and encouraged the permissiveness that brings about this immoral behavior will someday come to a sad reckoning with him who has established the standards…
“Chastity is of great value. Chastity and virtue are ‘most dear and precious above all things’ (Moroni 9:9), more valuable than rubies or diamonds, than herds and flocks, than gold and silver, or than automobiles and land. But, sadly, in many cases they are on sale at the cheapest shops and at the cheapest prices.” (Teachings of Spencer W. Kimball, pp. 264-5)
Joseph F. Smith
"We believe…that we are here to fulfil a destiny, and not to fulfil a whim, or for the gratification of mortal lusts…Personal purity and proper thoughts…are the bases of all proper action. I wish that all young [people] could appreciate the value there is in this practice, and in giving their youthful days to the service of the Lord…There appears to be a something beyond and above the reasons apparent to the human mind why chastity brings strength and power to the peoples of the earth, but it is so.
"We believe in one standard of morality for men and women. If purity of life is neglected, all other dangers set in upon us like the rivers of waters when the flood gates are opened.
"We desire with holy zeal to emphasize the enormity of sexual sins. Though often regarded as insignificant by those not knowing the will of God, they are, in his eyes an abomination, and if we are to remain his favored people they must be shunned as the gates of hell…
“Unchastity, furthermore, not only fixes its penalty on the one who transgresses, but reaches out unerring punishment to the third and fourth generation, making not only the transgressor a wreck, but mayhap involving scores of people in his direct line of relationship, disrupting family ties, breaking the hearts of parents, and causing a black stream of sorrow to overwhelm their lives.” (Teachings of Presidents of the Church: Joseph F. Smith, pp. 156-7)
First Presidency Message
“You husbands and wives who have taken on solemn obligations of chastity in the holy temples of the Lord and who violate those sacred vows by illicit sexual relations with others, you not only commit the vile and loathsome sin of adultery, but you break the oath you yourselves made with the Lord Himself before you went to the altar for your sealing. You become subject to the penalties which the Lord has prescribed for those who breach their covenants with Him.” (Heber J. Grant, J. Reuben Clark, Jr., David O. McKay, Oct. 1942, as taken from Daniel Ludlow’s, A Companion to Your Study of the Book of Mormon,p.117)/blockquote>Spencer W. Kimball
“Yet we have too many young people in the Church who do not give God’s law on physical intimacy its proper priority. One survey revealed that seven out of nine girls who lost their virtue suffered that loss in cars after dances and parties. In another survey, in which seminary teachers asked students to place certain commandments of the Lord in the order of their importance, the Word of Wisdom placed first and chastity fifth. Yet another survey showed that ten of twelve students had petted to the point that they considered their virtue lost. It is hoped that these surveys were not typical of all of our youth.” (Miracle of Forgiveness, p. 65)