The Doctrine and Covenants/Section 114
Revelation through Joseph Smith, Far West, Missouri, April 17, 1838. History of the Church 3:23.
1 Verily thus saith the Lord: It is wisdom in my servant David W. Patten, that he settle up all his business as soon as he possibly can, and make a disposition of his merchandise, that he may perform a mission unto me next spring, in company with others, even twelve including himself, to testify of my name and bear glad tidings unto all the world.
2 For verily thus saith the Lord, that inasmuch as there are those among you who deny my name, others shall be planted in their stead and receive their bishopric. Amen.