From wikipedia [Dec 14. 2015]: In Mormonism, the oath of vengeance (or law of vengeance) was an oath that was made by participants in the endowment ritual of The Church of Jesus Christ of Latter-day Saints (LDS Church) between about 1845 and the early 1930s, in which participants vowed to pray that God would avenge the blood of the prophets Joseph Smith and Hyrum Smith, who were assassinated in 1844 by a mob.
The oath of vengeance was an addition made to the Nauvoo endowment under the direction of Brigham Young by 1845 in the Nauvoo Temple, soon after the 1844 death of Joseph Smith. Participants agreed to be bound by the following oath:
"You and each of you do covenant and promise that you will pray and never cease to pray to Almighty God to avenge the blood of the prophets upon this nation, and that you will teach the same to your children and to your children's children unto the third and fourth generation."
"The prophets" referred to Joseph and Hyrum Smith, who were killed in 1844 by a mob while in jail in Carthage, Illinois. "This nation" referred to the United States.
The oath entered the endowment at a time when many Mormons hoped for retribution for the deaths of Joseph and Hyrum Smith. At least one member of the LDS First Presidency understood the oath to include a personal obligation that, "if he had ever met any of those who had taken a hand in that massacre he would undoubtedly have attempted to avenge the blood of the martyrs." However, other Mormons understood the oath to require only prayer for God's vengeance, and not any obligation to take vengeance personally.
The prayer to which endowed Mormons obligated themselves took place, in at least some cases, as part of the Mormon prayer circle ceremony, which was also part of the endowment, but was often performed separately.
Blood atonement is the idea that spilled blood "cries out" for retribution and finds several examples in Mormon scripture as well as numerous references in the speeches and writings of early LDS Church leaders. In the Bible, for example, the blood of Abel ascended to the ears of God after he was killed by Cain (Genesis 4:10). In the Book of Mormon, the "blood of a righteous man" (Gideon) was said to "come upon" the theocratic leader Alma "for vengeance" against the murderer (Nehor) (Alma 1:13). Mormon scripture also refers to the "cry" of the blood of the saints ascending from the ground up to the ears of God as a testimony against those who killed them (2 Nephi 26: 3; D&C 88:6).
According to Brigham Young, it was inevitable that Joseph Smith's blood, and the blood of all martyrs to the faith, would be "atoned for" in "His own due time". Their blood, he said, was "under the altar" and "crying to God, day and night, for vengeance". Young was the most prolific author of speeches referencing blood atonement; his most direct speech stated that a person who "has committed a sin that he knows will deprive him of that exaltation which he desires, and that he cannot attain to it without the shedding of his blood, and also knows that by having his blood shed he will atone for that sin, and be saved and exalted with the Gods, is there a man or woman in this house but what would say, 'shed my blood that I may be saved and exalted with the Gods?' All mankind love themselves, and let these principles be known by an individual, and he would be glad to have his blood shed. That would be loving themselves, even unto an eternal exaltation. Will you love your brothers or sisters likewise, when they have committed a sin that cannot be atoned for without the shedding of their blood? Will you love that man or woman well enough to shed their blood? That is what Jesus Christ meant."
The oath of vengeance was referenced by John D. Lee in his confession of his involvement in the Mountain Meadows massacre. Lee stated, "I believed then as I do now, that it was the will of every true Mormon in Utah, at that time, that the enemies of the Church should be killed as fast as possible, and that as this lot of people had men amongst them that were supposed to have helped kill the Prophets in the Carthage jail, the killing of all of them would be keeping our oaths and avenging the blood of the Prophets." After the events of the massacre became known to the U.S. government, Lee was the only man out of the dozens of participants who was executed by Utah's territorial government. In keeping with Mormon beliefs about blood atonement, Lee was executed by firing squad. Until 2004, Utah's capital punishment laws allowed the condemned to choose execution by firing squad.
The Oath of Vengeance against the American people and the Government for the death of Joseph Smith was a very important part of the temple ceremony for many years. Because of this temple ceremony vow of vengeance upon this nation, a protest was filed in 1903 in the United States Senate to have Reed Smoot, a Mormon Apostle who had been elected a Senator from Utah, removed from office on the grounds that he had taken this treasonous oath in the endowment ritual. It became the subject of a United States Senate Investigation.
The complete record of this episode was published in U.S. Senate Document 486 (59th Congress, 1st Session) Proceedings Before the Committee on Privileges and Elections of the United States Senate in the Matter of the Protests Against the Right of Reed Smoot, a Senator from the State of Utah, to hold his Seat. 4 vols. [1 vol. index] Washington: Government Printing Office, 1906).
John Hawley made these statements in his testimony concerning the Smoot investigation:
"I went to Salt Lake City in 1856. They gave the endowments of washing and anointing, and then there was an oath taken in Utah to avenge the blood of the prophet... In taking the endowments at Salt Lake there was the oath required, and the oath that was required was to 'avenge the death or blood of the prophet.' We were made to swear to avenge the death of Joseph Smith the Martyr, together with that of his brother Hyrum, on this American nation, and that we should teach our children and children's children to do so. 'The penalty for this grip and oath was disembowelment,' I would not have discussed the method of these endowments when I was a member of the Utah Church. The penalty for revealing or disclosing these secrets was disembowelment. The grips and tokens
of the priesthood were what we were not to disclose... I kept the obligation while living in Salt Lake City.
Brigham Young stated, "Furthermore, every one who had passed through their
endowment, in the Temple, were placed under the most sacred obligation to
avenge the blood of the Prophet, whenever an opportunity offered, and to teach their children to do the same, thus making the entire Mormon people sworn and
avowed enemies of the American nation." (Confessions of John D. Lee, p. 160)
It was a serious matter for a Mormon if they broke the covenants they made in
the temple. The threats were real. The Danites saw to it that punishment was
swift and without mercy. This oath was one of the reasons that the Mountain Meadow Massacre took place.
Beginning in 1919, LDS Church president Heber J. Grant appointed a committee charged with revising the endowment ceremony, which was done under the direction of apostle George F. Richards from 1921 to 1929. Richards revised the ceremony to eliminate the oath of vengeance, and the revision was formally implemented in the early 1930s.
Heber C. Kimball, a member of the Quorum of the Twelve Apostles of the LDS Church, described the oath of vengeance in his diary on December 21, 1845.
Increase and Maria Van Duesen, a married couple, describe their participation in the oath of vengeance in the Nauvoo Temple on January 29, 1846.
Ann Eliza Young, former wife of LDS Church president Brigham Young, described, in her autobiography, her experience taking the oath of vengeance.
A woman known only as "Mrs G.H.R." attended an endowment ceremony in September 1879 in Salt Lake City, Utah Territory. She provided the information for a Salt Lake Tribune article detailing the endowment ceremony. In it, she described the oath of vengeance.
In 1889, several members of the LDS Church that had emigrated from other countries applied for citizenship to the United States. Their loyalty to the United States was called into question due to rumors of oaths taken during the endowment ceremony. The following testimonies are found in the transcripts of those court proceedings.
Abraham H. Cannon, a member of the Quorum of the Twelve Apostles of the LDS Church, wrote in his diary, December 6, 1889, the description his father, apostle George Q. Cannon gave of the oath of vengeance.
Because LDS Church members are advised against speaking in detail about the rituals of the temple, there are few records regarding interrelated doctrines and rituals once they have been altered or removed. Blood atonement is usually a more general concept, with specific temple rituals such as the oath of vengeance and "blood oaths" or "penalties" acting as specific applications of blood atonement.
The blood oaths in the LDS Church temple ceremony, which were discontinued church-wide in 1990, depicted a willingness to have one's throat cut from ear to ear should the participant reveal certain portions of the sacred rituals or fail to keep promises given during the washing and anointing ordinances. The oath of vengeance deals with praying to God for justice against the killers of Joseph and Hyrum Smith.
The oath of vengeance is related to blood atonement in that both require capital punishment for sins regarded as unusually heinous. In early Mormonism, repentance for crimes such as murder or adultery, where restitution is not possible, involved personal sacrifice in order to make redemption possible through the atonement of Jesus Christ. Blood atonement was preached as a method of personal redemption, preferably voluntary, that could reinstate the possibility of salvation.