How shall we know that we obey [God]? There is but one method by which we can know it, and that is by the inspiration of the Spirit of the Lord witnessing unto our spirit that we are His, that we love Him, and that He loves us. It is by the spirit of revelation we know this.
Brigham YoungNow if any of you will deny the plurality of wives and continue to do so, I promise that you will be damned; and I will go still further, and say that this revelation, or any other revelation that the Lord had given, and deny it in your feelings, and I promise that you will be damned.
Brigham Young