But it is noteworthy that, with that brief, sufficient assurance, Hezekiah, as it were, is put aside, and instead of three fighters in the field, the king, with God to back him, and on the other side Sennacherib, two only, appear. It is a duel between Jehovah and the arrogant heathen who had despised Him. Jerusalem appears for a moment, in a magnificent piece of poetical scorn, as despising and making gestures of contempt at the baffled would-be conqueror, as Miriam and her maidens did by the Red Sea. The city is 'virgin,' as many a fortress in other lands has been named, because uncaptured. But she, too, passes out of sight, and Jehovah and Sennacherib stand opposed on the field. God speaks now not 'concerning,' but to, him, and indicts him for insane pride, which was really a denial of dependence on God, and passionate antagonism to Him, as manifested not only in his war against Jehovah's people, but also in the tone of his insolent defiances of Hezekiah, in which he scoffed at the vain trust which the latter was placing in his God, and paralleled Jehovah with the gods of the nations whom he had already conquered (Isaiah xix. 12).
The designation of God, characteristic of Isaiah, as 'the Holy One of Israel,' expresses at once His elevation above, and separation from, all mundane, creatural limitations, and His special relation to His people, and both thoughts intensify Sennacherib's sin. The Highest, before whose transcendent height all human elevations sink to a uniform level, has so joined Israel to Himself that to touch it is to strike at Him, and to vaunt one's self against it is to be arrogant towards God. That mighty name has received wider extension now, but the wider sweep does not bring diminished depth, and lowly souls who take that name for their strong tower can still run into it and be safe from 'the oppressor's wrong, the proud man's contumely,' and the strongest foes.
There is tremendous scorn in the threat with which the divine address to Sennacherib ends. The dreaded world-conqueror is no more in God's eyes than a wild beast, which He can ring and lead as He will, and not even as formidable as that, but like a horse or a mule, that can easily be bridled and directed. What majestic assertion lies in these figures and in '_My_ hook' and '_My_ bridle!' How many conquerors and mighty men since then have been so mastered, and their schemes balked! Sennacherib had to return by 'the way that he came,' and to tramp back, foiled and disappointed, over all the weary miles which he had trodden before with such insolent confidence of victory. A modern parallel is Napoleon's retreat from Moscow. But the same experience really befalls all who order life regardless of God. Their schemes may seem to succeed, but in deepest truth they fail, and the schemers never reach their goal.
In verse 29 the prophet turns away abruptly and almost contemptuously from Sennacherib to speak comfortably to Jerusalem, addressing Hezekiah first, but turning immediately to the people. The substance of his words to them is, first, the assurance that the Assyrian invasion had limits of time set to it by God; and, second, that beyond it lay prosperous times, when the prophetic visions of a flourishing Israel should be realised in fact. For two seed-times only field work was to be impossible on account of the Assyrian occupation, but it was to foam itself away, like a winter torrent, before a third season for sowing came round.
But how could this sequence of events, which required time for its unfolding, be 'a sign'? We must somewhat modify our notions of a sign to understand the prophet. The Scripture usage does not only designate by that name a present event or thing which guarantees the truth of a prophecy, but it sometimes means an event, or sequence of events, in the future, which, when they have come to pass in accordance with the divine prediction of them, will shed back light on other divine words or acts, and demonstrate that they were of God. Thus Moses was given as a sign of his mission the worshipping in Mount Sinai, which was to take place only after the Exodus. So with Isaiah's sign here. When the harvest of the third year was gathered in, then Israel would know that the prophet had spoken from God when he had sung Sennacherib's defeat. For the present, Hezekiah and Judah had to live by faith; but when the deliverance was complete, and they were enjoying the fruits of their labours and of God's salvation, then they could look back on the weary years, and recognise more clearly than while these were slowly passing how God had been in all the trouble, and had been carrying on His purposes of mercy through it all. And there will be a 'sign' for us in like manner when we look back from eternity on the transitory conflicts of earthly life, and are satisfied with the harvest which He has caused to spring from our poor sowings to the Spirit.