Jehovah Is the Redeemer
6 Thus saith the Lord the King of Israel, and his redeemer the Lord of hosts; I am the first, and I am the last; and beside me there is no God.
Elder Bruce R. McConkie wrote:
“An Old Testament passage that was spoken by Jehovah of Himself, and which has clear and plain fulfillment in Christ, is preserved for us in these words: ‘Thus saith the Lord the King of Israel, and his redeemer the Lord of hosts; I am the first, and I am the last; and beside me there is no God. . . . For the Lord hath redeemed Jacob, and glorified himself in Israel’ (Isaiah 44:6, 23.) We are, of course, fully aware that Christ is the one who redeemed both Israel and all who would join with the chosen people in doing the deeds of true devotion. But it is more than mere chance to hear the voice of the risen and embodied Lord say to John the same thing the yet-unborn and unembodied Lord had said to Isaiah. ‘I am the first and the last,’ came the Voice, ‘I am he that liveth, and was dead; and, behold, I am alive for evermore’ (Revelation 1:17–18).
“We need have no hesitancy, in view of all that is known and written, in both general and specific terms, to testify that Jehovah the Redeemer is He who was born of Mary and who is known in all Christendom as Christ the Redeemer.”
(The Promised Messiah: The First Coming of Christ , 312–13.)