The Mormon Church does not practice polygamy.
The Fundamentalist LDS church which adheres to the original writings of Joseph Smith and Brigham Young practices polygamy; as did the Mormon church for decades. Did the unchangeable God just “change his mind” with what he allegedly said to Smith about everything else that was downloaded to Smith concerning the foundation of the Mormon church?
It would seem, in that case, that either Smith or God is a liar.
Think I’ll stick with the latter.