[23] I regret very much that in previous editions I should have erroneously imputed this opinion to Dr. Hermann Schultz--through a mistranslation of his words on pp. 726, 727 of his _A. T. Theologie_.
We fall back with greater confidence on other arguments of a more general kind, which apply to all Isaiah's prophecies of the Messiah. If Isaiah had one revelation rather than another to make, it was the revelation of the unity of God. Against king and people, who crowded their temple with the shrines of many deities, Isaiah presented Jehovah as the one only God. It would simply have nullified the force of his message, and confused the generation to which he brought it, if either he or they had conceived of the Messiah, with the conceiving of Christian theology, as a separate Divine personality.
Again, as Mr. Robertson Smith has very clearly explained,[24] the functions assigned by Isaiah to the King of the future are simply the ordinary duties of the monarchy, for which He is equipped by the indwelling of that Spirit of God, that makes all wise men wise and valorous men valorous. "We believe in a Divine and eternal Saviour, because the work of salvation as we understand it in the light of the New Testament is essentially different from the work of the wisest and best earthly king." But such an earthly king's work is all Isaiah looks for. So that, so far from its being derogatory to Christ to grudge the sense of Divinity to these names, it is a fact that the more spiritual our notions are of the saving work of Jesus, the less inclined shall we be to claim the prophecies of Isaiah in proof of His Deity.