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. [24] _Prophets of Israel_, p. 306. There is a third argument in the same direction, the force of which we appreciate only when we come to discover how very little from this point onwards Isaiah had to say about the promised king. In chaps. i.-xxxix. only three other passages are interpreted as describing the Messiah. The first of these, xi. 1-5, dating perhaps from about 720, when Hezekiah was king, tells us, for the first and only time by Isaiah's lips, that the Messiah is to be a scion of David's house, and confirms what we have said: that His duties, however perfectly they were to be discharged, were the usual duties of Judah's monarchy.[25] The second passage, xxxii. 1 ff., which dates probably from after 705, when Hezekiah was still king, is, if indeed it refers at all to the Messiah, a still fainter, though sweeter, echo of previous descriptions. While the third passage, xxxiii. 17: _Thou shalt see thy king in his beauty_, does not refer to the Messiah at all, but to Hezekiah, then prostrate and in sackcloth, with Assyria thundering at the gate of Jerusalem (701). The mass of Isaiah's predictions of the Messiah thus fall within the reign of Ahaz, and just at the point at which Ahaz proved an unworthy representative of Jehovah, and Judah and Israel were threatened with complete devastation. There is a repetition when Hezekiah has come to the throne. But in the remaining seventeen years, except perhaps for one allusion, Isaiah is silent on the ideal king, although he continued