Brigham Young teaches that the murderers of Joseph will, in future, submit to "blood atonement."
Brigham Young, "The Priesthood and Satan—the Constitution and Government of the United States—Rights and Policy of the Latter-Day Saints." February 18, 1855. Journal of Discourses, 26 vols. (Liverpool: F.D. Richards, 1855), 2:186
I will tell you how much I love those characters. If they had any respect to their own welfare, they would come forth and say, whether Joseph Smith was a Prophet or not, ‘We shed his blood, and now let us atone for it;’ and they would be willing to have their heads chopped off, that their blood might run upon the ground, and the smoke of it rise before the Lord as an incense for their sins. I love them that much. But if the Lord wishes them to live and foam out their sins before all men and women, it is all right, I care not where they go, or what they do.