(31)A remnant.--Isaiah's favourite doctrine of the remnant (Isaiah 4:2-3; Isaiah 10:20-21).

They that escape.--A survival.

Out of Jerusalem.--The ravaged land was to be newly stocked from thence.

The zeal (jealousy) of the Lord of hosts shall do this.--Another of the phrases of Isaiah. (See Isaiah 10:7.) (The word hosts, wanting in the common Hebrew text, is found in many MSS., and all the versions).

Verse 31. - For out of Jerusalem shall go forth a remnant. The march of Sennacherib and the raid of Rabshakeh had driven the mass of the escaped population of Judaea to take refuge within the walls of Jerusalem, from which, on the retirement of the invaders, they would gladly "go forth," to recultivate their lands (ver. 29) and restore their ruined homes. And they that escape - rather, that shall escape - out of Mount Zion - "Mount Zion" is a variant for Jerusalem, as in ver. 21, and in Isaiah and the Psalms so continually - the zeal of the Lord of hosts shall do this. So in Isaiah 9:7 and Isaiah 37:32. Here most manuscripts have "the zeal of the Lord," omitting "of hosts;" and this is probably the right reading. The meaning is that God's zealous love and care for his people will effect their complete restoration to prosperity and glory, difficult as it was at the time to imagine such a restoration.

19:20-34 All Sennacherib's motions were under the Divine cognizance. God himself undertakes to defend the city; and that person, that place, cannot but be safe, which he undertakes to protect. The invasion of the Assyrians probably had prevented the land from being sown that year. The next is supposed to have been the sabbatical year, but the Lord engaged that the produce of the land should be sufficient for their support during those two years. As the performance of this promise was to be after the destruction of Sennacherib's army, it was a sign to Hezekiah's faith, assuring him of that present deliverance, as an earnest of the Lord's future care of the kingdom of Judah. This the Lord would perform, not for their righteousness, but his own glory. May our hearts be as good ground, that his word may strike root therein, and bring forth fruit in our lives.And it came to pass, when King Hezekiah heard it,.... The report of Rabshakeh's speech, recorded in the preceding chapter:

that he rent his clothes, and covered himself with sackcloth; rent his clothes because of the blasphemy in the speech; and he put on sackcloth, in token of mourning, for the calamities he feared were coming on him and his people: and he went into the house of the Lord; the temple, to pray unto him. The message he sent to Isaiah, with his answer, and the threatening letter of the king of Assyria, Hezekiah's prayer upon it, and the encouraging answer he had from the Lord, with the account of the destruction of the Assyrian army, and the death of Sennacherib, are the same "verbatim" as in Isaiah 37:1 throughout; and therefore the reader is referred thither for the exposition of them; only would add what Rauwolff (t) observes, that still to this day (1575) there are two great holes to be seen, wherein they flung the dead bodies (of the Assyrian army), one whereof is close by the road towards Bethlehem, the other towards the right hand against old Bethel.

(t) Travels, par. 3. ch. 22. p. 317.