William Clayton's record of Heber C. Kimball making a covenant to never rest until he avenges murder of Joseph and Hyrum Smith.
William Clayton, Journal, December 21, 1845, rep. George D. Smith, An Intimate Chronicle; The Journals of William Clayton (Significant Mormon Diaries Series No 5; Salt Lake City: Signature Books, 1995), 220, 224
[December 21, 1845. Sunday.] According to appointment on Sunday last, a meeting was held in the east room this day of all those who could clothe themselves in the garments of Priesthood, 75 persons were present, Elder H. C. Kimball presiding...
Elder Kimball said word came to him and to all the Twelve about time to lay aside their garments, and take them to pieces, or cut them up so that they could not be found.
The Sisters ought not to gather together in schools to pray unless their husbands, or some man be with them, every evening at 5 o clock the High Priests meet for prayer by themselves. Clothed in their robes of Priesthood. Also the High Council and the Seventies.
There are from seven to twelve persons who have met together every day to pray ever since Joseph's death, and this people have been sustained upon this principle. Here is brother Turley has been liberated by the power of God and not of man, and I have covenanted, and never will rest nor my posterity after me until those men who killed Joseph and Hyrum have been wiped out of the earth.
The fact that these comments were made in the temple and the indirect reference to a prayer circle ("seven to twelve persons who have met together every day to pray") lends credence to the idea that Heber C. Kimball's description of his covenant to "never . . . rest nor my posterity after me until those men who killed Joseph and Hyrum have been wiped out of the earth" should be understood against the backdrop of the "oath of vengeance" that was given as part of the temple endowment at that time.