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I, the Lord God, will send one mighty and strong, holding the scepter of power in his hand, clothed with light for a covering, whose mouth shall utter words, eternal words; while his bowels shall be a fountain of truth, to set in order the house of God. Doctrine & Covenants 85:7
Trivia: In Section 41, God commanded the church to build a house for someone. Who was that person?