Isaiah by his ministry had made Israel's God to be new in Israel's eyes. Hezekiah's lofty prayer drew forth through the prophet an answer from Jehovah (vv. 21-32). This is one of the most brilliant of Isaiah's oracles. It is full of much, with which we are now familiar: the triumph of the inviolable fortress, _the virgin daughter of Zion_, and her scorn of the arrogant foe; the prophet's appreciation of Asshur's power and impetus, which only heightens his conviction that Asshur is but an instrument in the hand of God; the old figure of the enemy's sudden check as of a wild animal by hook and bridle; his inevitable retreat to the north. But these familiar ideas are flung off with a terseness and vivacity, which bear out the opinion that here we have a prophecy of Isaiah, not revised and elaborated for subsequent publication, like the rest of his book, but in its original form, struck quickly forth to meet the city's sudden and urgent prayer. The new feature of this prophecy is the sign added to it (ver. 30). This sign reminds us of that which in opposite terms described to Ahaz the devastation of Judah by the approaching Assyrians (chap. vii.). The wave of Assyrian war is about to roll away again, and Judah to resume her neglected agriculture, but not quite immediately. During this year of 701 it has been impossible, with the Assyrians in the land, to sow the seed, and the Jews have been dependent on the precarious crop of what had fallen from the harvest of the previous year and sown itself--_saphîah_, or _aftergrowth_. Next year, it being now too late to sow for next year's harvest, they must be content with the _shahîs--wild corn, that which springs of itself. But the third year sow ye, and reap, and plant vineyards and eat the fruit thereof._ Perhaps we ought not to interpret these numbers literally. The use of three gives the statement a formal and general aspect, as if the prophet only meant, It may be not quite at once that we get rid of the Assyrians; but when they do go, then they go for good, and you may till your land again without fear of their return. Then rings out the old promise, so soon now to be accomplished, about _the escaped_ and _the remnant_; and the great pledge of the promise is once more repeated: _The zeal of Jehovah of hosts will perform this_. With this exclamation, as in ix. 7, the prophecy reaches a natural conclusion; and vv. 33-35 may have been uttered by Isaiah a little later, when he was quite sure that the Assyrian would not even attempt to repeat his abandoned blockade of Jerusalem. * * * * *