Revelation given through Joseph Smith the Prophet, at Far West, Missouri, April 11, 1838.

1–2, Church positions held by those who are not faithful will be given to others.

1 Verily thus saith the Lord: It is wisdom in my servant David W. Patten, that he settle up all his business as soon as he possibly can, and make a disposition of his merchandise, that he may perform a mission unto me next spring, in company with others, even twelve including himself, to testify of my name and bear glad tidings unto all the world.
Note: Joseph Smith was a false prophet as the mission never occurred.
The Mormons encountered one of the militia's sentries, John Lockart, with whom the Mormons briefly exchanged words. After Lockhart reportedly heard a gun snap, he shot at the crowd, hitting Patrick O'Bannion, the Mormons' scout. O'Bannion later died from this wound. Lockhart fled down the hill to the militia camp, while the Mormon company formed a line in three columns, led by David W. Patten, Charles C. Rich, and Patrick Durfee. Rich later recalled that soon after the Mormons had formed their lines, the militia "fired upon us with all their guns". A general firefight commenced, but the militia were situated behind the riverbank and held the tactically superior position. Patten decided to charge the militia position, shouting the Mormon battle cry of "God and Liberty!" The Missourians were without swords and so broke their lines and fled across the river in all directions. During his charge, Patten was shot and mortally wounded. Ebenezer Robinson recalled that Patten had been "brave to a fault, so much so that he was styled and called 'Captain Fearnought'". Although it was not immediately realized, Gideon Carter had also been killed, making a total of three Mormon fatalities and one militiaman fatality. The Mormons collected their wounded as well as the baggage which Bogart's unit had left in the camp and made their way back to Far West.

2 For verily thus saith the Lord, that inasmuch as there are those among you who deny my name, others shall be planted in their stead and receive their bishopric. Amen.
Note: David Patten was a religious fanatic.
The wounded Patten was carried from the battlefield to the home of Stephen Winchester, four miles distant. En route he was visited by Joseph Smith, Hyrum Smith, and his wife. Patten reiterated his testimony of the church to his visitors. Upon seeing her husband dying, Ann Patten exclaimed, "Oh God! Oh my husband! How pale you look." His final words to his wife were, "Whatever you do else, O do not deny the faith," after which he addressed the others in the room. Moments after this, about 10 p.m., he died. Regarding Patten's death, Joseph Smith said, "There lies a man who has done just as he said he would—he has laid down his life for his friends." Patten was buried in an unmarked grave on October 27, 1838, in Far West, Missouri.