In Sacred Loneliness: The Plural Wives of Joseph Smith, p. 348 wrote:Her father, Newel K. Whitney, performed the ceremony: “You both mutually agree to be each other’s companion so long as you both shall live, preserving yourselves for each other and from all others and also throughout all eternity, reserving only those rights which have been given to my servant Joseph by revelation...If you both agree to covenant and do this, I then give you, S.A. Whitney, my daughter, to Joseph Smith, to be his wife, to observe all the rights between you both that belong to that condition...”
And here is the unpublished revelation regarding that marriage:
H. Michael Marquardt, The Joseph Smith Revelations: Text and Commentary (Salt Lake City: Signature Books, 1999), 315-16. wrote:Verily, thus saith the Lord unto my servant N. K. Whitney, the thing that my servant Joseph Smith has made known unto you and your family and which you have agreed upon is right in mine eyes and shall be rewarded upon your heads with honor and immortality and eternal life to all your house, both old and young because of the lineage of my Priesthood, saith the Lord, it shall be upon you and upon your children after you from generation to generation, by virtue of the holy promise which I now make unto you, saith the Lord. These are the words which you shall pronounce upon my servant Joseph and your daughter S. A. Whitney. They shall take each other by the hand and you shall say, You both mutually agree, calling them by name, to be each other's companion so long as you both shall live, preserving yourselves for each other and from all others and also throughout eternity, reserving only those rights which have been given to my servant Joseph by revelation and commandment and by legal authority in times passed. If you both agree to covenant and do this, I then give you, S. A. Whitney, my daughter, to Joseph Smith, to be his wife, to observe all the rights between you both that belong to that condition. I do it in my own name and in the name of my wife, your mother, and in the name of my holy progenitors, by the right of birth which is of priesthood, vested in me by revelation and commandment and promise of the living God, obtained by the Holy Melchisedeck Gethrow and others of the Holy Fathers, commanding in the name of the Lord all those powers to concentrate in you and through you to your posterity forever. All these things I do in the name of the Lord Jesus Christ, that through this order he may be glorified and that through the power of anointing David may reign King over Israel, which shall hereafter be revealed. Let immortality and eternal life hereafter be sealed upon your heads forever and ever.
How do the apologists claim that JSJr kept this covenant that he made to god and Sarah Ann Whitney to preserve himself for her and from all others?