In 1916, the First Presidency issued a statement, “The Father and the Son,” a document detailing the relationship between God the Father and the Son. The following section on Jesus being the agent of the Father is of interest (this comes from vol. 5 of the 6-vol. Messages of the First Presidency edited by James R. Clark):
4. Jesus Christ the "Father" By Divine Investiture of Authority
A fourth reason for applying the title "Father" to Jesus Christ is found in the fact that in all His dealings with the human family Jesus the Son has represented and yet represents Elohim His Father in power and authority. This is true of Christ in His preexistent, antemortal, or unembodied state, in the which He was known as Jehovah; also during His embodiment in the flesh; and during His labors as a disembodied spirit in the realm of the dead; and since that period in His resurrected state. To the Jews He said: "I and my Father are one" (John 10:30; see also 17:11, 22); yet He declared "My Father is greater than I" (John 14:28); and further, "I am come in my Father's name" (John 5:43; see also 10:25). The same truth was declared by Christ Himself to the Nephites (see 3 Nephi 20:35 and 28:10), and has been reaffirmed by revelation in the present dispensation (Doc. & Gov. 50:43). Thus the Father placed His name upon the Son; and Jesus Christ spoke and ministered in and through the Father's name; and so far as power, authority and Godship are concerned His words and acts were and are those of the Father.
We read, by way of analogy, that God placed His name upon or in the Angel who was assigned to special ministry unto the people of Israel during the exodus. Of that Angel the Lord said: "Beware of him, and obey his voice, provoke him not; for he will not pardon your transgressions: for my name is in him" (Exodus 23:21).
The ancient apostle, John, was visited by an angel who ministered and spoke in the name of Jesus Christ. As we read: "The Revelation of Jesus Christ, which God gave unto him, to shew unto his servants things which must shortly come to pass; and he sent and signified it by his angel unto his servant John" (Revelation 1:1). John was about to worship the angelic being who spoke in the name of the Lord Jesus Christ, but was forbidden: "And I John saw these things, and heard them. And when I had heard and seen, I fell down to worship before the feet of the angel which showed me these things. Then saith he unto me, See thou do it not: for I am thy fellow-servant, and of thy brethren the prophets, and of them which keep the sayings of this book: worship God" (Rev. 22:8, 9). And then the angel continued to speak as though he were the Lord Himself: "And, behold, I come quickly; and my reward is with me, to give every man according as his work shall be. I am Alpha and Omega, the beginning and the end, the first and the last" (verses 12, 13). The resurrected Lord, Jesus Christ, who had been exalted to the right hand of God His Father, had placed His name upon the angel sent to John, and the angel spoke in the first person, saying "I come quickly," "I am Alpha and Omega," though he meant that Jesus Christ would come, and that Jesus Christ was Alpha and Omega.