BY maintains plural marriage is required for eternal salvation.
"Remarks," Deseret News, August 6, 1862, 1
Why do we believe in and practice polygamy? Because the Lord introduced it to his servants in a revelation given to Joseph Smith, and the Lord's servants have always practiced it. "And is that religion popular in heaven?" It is the only popular religion there, for this is the religion of Abraham, and, unless we do the works of Abraham, we are not Abraham's seed and heirs according to promise.