Revelation given through Joseph Smith the Prophet, at Far West, Missouri, July 8, 1838, in response to the supplication, “Show us thy will, O Lord, concerning the Twelve.”

1–3, The Lord will provide for the families of the Twelve; 4–6, Vacancies in the Twelve are filled.

1 Verily, thus saith the Lord: Let a conference be held immediately; let the Twelve be organized; and let men be appointed to supply the place of those who are fallen.
Note: Joseph Smith caused problems wherever he went.
With the Kirtland-based presidency now in control of the Missouri church, a leadership struggle emerged between the Kirtland arrivals and the previously established Missouri church leadership. Many of the oldest and most prominent leaders of the church, including Oliver Cowdery (one of the Three Witnesses and the church's original "second elder"), David Whitmer (another of the Three Witnesses and Stake President of the Missouri Church), John Whitmer, and William W. Phelps, were excommunicated on allegations of misusing church property and finance amid tense relations between them and Smith.
 
2 Let my servant Thomas remain for a season in the land of Zion, to publish my word.
Note: Thomas Marsh vigorously opposed Mormon murder.
Although disfellowshipped, David Whitmer, John Whitmer, Oliver Cowdery, W.W. Phelps, and other former leaders (who were known as the "dissenters") continued to live in the county. According to Reed Peck, two of these Danites, Jared Carter and Dimick B. Huntington, proposed at a meeting that the society should kill the dissenters. Marsh and fellow moderate, John Corrill, spoke vigorously against the motion. However, on the following Sunday, Rigdon issued his "Salt Sermon," in which he likened the dissenters to salt that had lost its savor and was "good for nothing, but to be cast out, and to be trodden under foot of men". Within a week the dissenters had fled the county.

3 Let the residue continue to preach from that hour, and if they will do this in all lowliness of heart, in meekness and humility, and long-suffering, I, the Lord, give unto them a promise that I will provide for their families; and an effectual door shall be opened for them, from henceforth. 4 And next spring let them depart to go over the great waters, and there promulgate my gospel, the fulness thereof, and bear record of my name. 5 Let them take leave of my saints in the city of Far West, on the twenty-sixth day of April next, on the building-spot of my house, saith the Lord.
Note: Joseph Smith was a false prophet.
General Clark cited Executive Order 44 soon after the Mormon settlers surrendered in November 1838, saying that violence would have been used had they chosen not to surrender. ...The order of the governor was to me, that you should be exterminated, and not allowed to remain in the state; and had not your leaders been given up, and the terms of this treaty complied with, your families before this time would have been destroyed, and your houses in ashes. There is a discretionary power vested in my hands, which concerning your circumstances I will exercise for a season...  General Clark explicitly stated that the Mormons should expect no mercy and that their leaders would not be returned to them. Clark furthermore stated: “I do not say you shall go now, but you must not think of staying here another season, or of putting in crops, for the moment you do this, the citizens will be upon you; and if I am called here again, in a case of a non-compliance of a treaty made, do not think I will do as I have now. You need not expect any mercy, but extermination, for I am determined the governor's orders be executed. As for your leaders, do not think, do not imagine for a moment, do not let it enter into your mind, that they will be delivered and restored to you again, for their fate is fixed, their die is cast, their doom is sealed.” Consequently, approximately 15,000 Mormons promptly fled to Illinois, enduring the harsh winter conditions.

6 Let my servant John Taylor, and also my servant John E. Page, and also my servant Wilford Woodruff, and also my servant Willard Richards, be appointed to fill the places of those who have fallen, and be officially notified of their appointment.
Note: Sidney Rigdon and Joseph Smith threatened the lives of the “fallen” apostles.
On 17 June 1838, in Far West, Rigdon delivered a harsh public condemnation of a large number of the members and leaders of the church for their perceived disloyalty towards Smith and Rigdon. While no summary or text of Rigdon's sermon remains, eyewitnesses indicated that Rigdon took the subject of his text from the fifth chapter of the Gospel of Matthew. If the salt have lost its savor, wherewith shall it be salted? It is thenceforth good for nothing, but to be cast out, and to be trodden underfoot of men. According to Rigdon, the dissenters were like the "salt" spoken of by Jesus (part of the metaphors of salt and light in the Sermon on the Mount) and must be "trodden underfoot". Rigdon was then followed by Smith with a short speech, in which he seemingly sanctioned what Rigdon had said.