Lightner claims Joseph was commanded Joseph to practice polygamy in July 1834.
Mary Elizabeth Rollins Lightner, “Mary Elizabeth Rollins" (biography [legal paper]) copy of holograph in Susa Young Gates Papers, USHS box 14, fd 4, undated
I received the interpretation for what to my astonishment, when Joseph made known to me that God had commanded him in July, 1834, to take me for a wife. But he had not dared to make it known to me, for when he received the revelation, I was in Missouri and when he did see me, I was married. But he was again commanded to fulfill the first revelation or suffer condemnation, for I was created for him before the foundation of the earth was laid.