Jesus Christ as the Designated Mediating Prophet

Lewis Sperry Chafer wrote the following, regarding Christ as prophet, in Vol. 4 of his "Systematic Theology" (pages 299-300, Dallas Seminary Press):

Because of its repetition in quotations given in subsequent Scriptures, the one exalted passage regarding Christ as Prophet must be the one found in Deuteronomy 18:15, 18-19, which reads: "The LORD thy God will raise up unto thee a Prophet from the midst of thee, of thy brethren, like unto me; unto him ye shall hearken. . . . I will raise them up a Prophet from among their brethren, like unto thee, and will put my words in his mouth; and he shall speak unto them all that I shall command him. And it shall come to pass, that whosoever will not hearken unto my words which he shall speak in my name, I will require it of him." It is to this expectation that Philip refers, as the following is recorded in John 1:45: "Philip findeth Nathanael, and saith unto him, We have found him, of whom Moses in the law, and the prophets, did write, Jesus of Nazareth, the son of Joseph." Peter quotes this prophecy in his second recorded sermon (Acts 3:22-23), and Stephen declares in his last address before his martyrdom, "This is that Moses, which said unto the children of Israel, A prophet shall the Lord your God raise up unto you of your brethren, like unto me; him shall ye hear" (Acts 7:37). In like manner it is equally clear that Christ assumed the mediatorial relationship which belongs to a prophet. He spoke for Another rather than from Himself. It is written, "Jesus answered them, and said, My doctrine is not mine, but his that sent me" (John 7:16); "For I have not spoken of myself; but the Father which sent me, he gave me a commandment, what I should say, and what I should speak. And I know that his commandment is life everlasting: whatsoever I speak therefore, even as the Father said unto me, so I speak" (12:49-50); "He that loveth me not keepeth not my sayings: and the word which ye hear is not mine, but the Father's which sent me" (14:24); "For I have given them the words which thou gavest me" (17:8).

In summary: The words of both Jesus and those who followed him indicate that he was assuming that mediatorial position of Prophet described in Deuteronomy 18. This claim on the part of Jesus was not one of little significance: for in claiming this mediatorial position, he was effectively claiming that any teaching which he brought was, in fact, a message from God himself, and carried with it that level of divine authority.