The Doctrine and Covenants/Section 80
Revelation through Joseph Smith, Hiram, Ohio, March 1832. History of the Church 1:257.
1 Verily, thus saith the Lord unto you my servant Stephen Burnett: Go ye, go ye into the world and preach the gospel to every creature that cometh under the sound of your voice.
2 And inasmuch as you desire a companion, I will give unto you my servant Eden Smith.
3 Wherefore, go ye and preach my gospel, whether to the north or to the south, to the east or to the west, it mattereth not, for ye cannot go amiss.
4 Therefore, declare the things which ye have heard, and verily believe, and know to be true.
5 Behold, this is the will of him who hath called you, your Redeemer, even Jesus Christ. Amen.