We find the principle of divine investiture of authority particularly prevalent in the Doctrine and Covenants. In fact, there are a number of occasions on which the Lord has chosen to speak as both Christ and Elohim in the same revelation. For example, in section 29 we read the following verse: “Listen to the voice of Jesus Christ, your Redeemer, the Great I Am, whose arm of mercy hath atoned for your sins” (D&C 29:1; italics added).
In verse 42, however, we have the following: “I, the Lord God, gave unto Adam and unto his seed, that they should not die as to the temporal death, until I, the Lord God, should send forth angels to declare unto them repentance and redemption, through faith on the name of mine Only Begotten Son” (italics added). In Doctrine and Covenants 49 the same principle is at work, this time in the opposite sequence. “Thus saith the Lord; for I am God, and have sent mine Only Begotten Son into the world for the redemption of the world” (verse 5; italics added). Observe now the last verse of the revelation: “Behold, I am Jesus Christ, and I come quickly” (D&C 49:28; italics added). How much more dramatically could the Lord demonstrate to his Saints that the words of Elohim are the words of Jehovah; that these two Gods have the same mind and thoughts; that they are perfectly united!