Brigham instructs the Saints to build temples.
Brigham Young, "The Kingdom of God," July 5, 1855, in Journal of Discourses, 26 vols. (Liverpool: F. D. Richards, 1855), 2:315
Then go on and build the Temples of the Lord, that you may receive the endowments in store for you, and possess the keys of the eternal Priesthood, that you may receive every word, sign, and token, and be made acquainted with the laws of angels, and of the kingdom of our Father and our God, and know how to pass from one degree to another, and enter fully into the joy of your Lord. Latter-day Saints, do you live to this, do you seek after it with all your heart? You are aware that the Lord is able to reveal all this in one day, but you could not understand it. The Elders who have preached abroad, and the Sisters who have taught their neighbors at home, know by experience that this is true.