And thou, child, shalt be called the Prophet of the Highest,.... Here Zacharias turns himself to his son John, though an infant, and incapable of knowing what was said to him; and for the sake of those that were present, describes his office and work; and says, that he should be "called", that is, that he should "be", and be accounted a "prophet": for he was not only a preacher of Christ and his Gospel, but he also foretold the coming of the Messiah; and the vengeance that should fall on the Jewish nation, for their unfruitfulness, impenitence, and unbelief: and the Prophet "of the Highest"; that is, of God; as the Persic version renders it, of the most high God; and by whom is meant, the Lord Jesus Christ, whose prophet, harbinger, and forerunner John was; and so is a proof of Christ being the supreme, or most high God: for thou shalt go before the face of the Lord, to prepare his ways; as the angel had suggested in Luk 1:17 and as was prophesied of him in Isa 11:3. See Gill on Mat 3:3.