Inasmuch as you [Joseph Smith] have inquired of my hand to know and understand wherein I, the Lord, justified my servants Abraham, Isaac, and Jacob, as also Moses, David and Solomon, my servants, as touching the principle and doctrine of their having many wives and concubines Doctrine & Covenants 132:1

Trivia: In section 137, Joseph Smith has a vision of the celestial kingdom. Who was he surprised to see there?