From these mountains is to roll the little stone that will bring to pass the purposes of the Almighty and settle this social question by a practical reform in the marriage system. . . .This fact the Lord revealed to His prophet, Joseph Smith, as early as the year 1831. And yet, had it not been for the fear of His displeasure, Joseph would have shrunk from the undertaking and would have continued silent, as he did for years, until an angel of the Lord threatened to slay him if he did not reveal and establish this celestial principle.