Joseph, five days before his death (June 22, 1844), tells Stephen Markham that if he and Hyrum Smith were ever "taken again, we should be massacred."
History, 1838–1856, volume F-1 [1 May 1844–8 August 1844]: 147, The Joseph Smith Papers website, accessed July 25, 2024
I told Stephen Markham that if I and Hyrum were ever taken again, we should be massacred, or I was not a prophet of God; “I want Hyrum to live to avenge my blood, b<ut> he is determined not to leave me.”
According to Dan Vogel, this was
Inserted by L[eo]H[awkins] on blank line in Book F-1, 147 (History of Joseph Smith and The Church of Jesus Christ of Latter-Day Saints, ed. Dan Vogel, 8 vols [Salt Lake City: The Smith-Pettit Foundation, 2015], 634 n. 35)