History of the Church 5:392; “In the celestial glory there are three heavens or degrees; and in order to obtain the highest, a man must enter into this order of the priesthood, [meaning the new and everlasting covenant of marriage;] and if he does not, he cannot obtain it. He may enter into the other, but that is the end of his kingdom: he cannot have an increase.””
Mark 12:24-25; “And Jesus answering said unto them, Do ye not therefore err, because ye know not the scriptures, neither the power of God? 25 For when they shall rise from the dead, they neither marry, nor are given in marriage; but are as the angels which are in heaven.”
“An increase” in heaven means becoming a polygamous god.