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20 It shall be in that day. Returning now to the elect people, he describes the result of the chastisement which was at hand. As it is painful and disagreeable to us to endure calamities and afflictions, and as we refuse them so far as lies in our power, the Lord points out to us the result of them, that we may be taught to consider the design of them, and may thus bear more patiently: as if he had said, “You would wish that the Assyrians were driven to a great distance from you, and that you could live in comfort and safety. But consider, that this chastisement is as necessary as medicine would be for curing your diseases; for you do not acknowledge the power of God, and you withdraw your confidence from him to give it to wicked men. It is truly wretched to place the hope of salvation in enemies, and to rely on those who aim at nothing but your destruction.” In like manner, Israel relied sometimes on the Assyrians and sometimes on the Egyptians.

But shall stay upon the Lord We ought not to despise this compensation made for the diminished numbers of the people, that the small portion which survived the calamity learned to place their hope in God. Hence we see more clearly how necessary it was that God should chastise Israel. The mitigation which he holds out, that still a remnant is left, among whom the true worship of God is maintained, is fitted to yield very high consolation.

In truth. This phrase is not superfluous; for until the Lord had afflicted them, all wished to be accounted the children of Abraham — all made profession of the faith, and indiscriminately worshipped God; but it was mere pretense. Isaiah therefore reproves this hypocrisy, and says that their hope will afterwards be true and sincere when they shall have been cleansed from impostures; for although they very haughtily boasted of their confidence in God, still they continued to place their confidence in the assistance of the Assyrians. Consequently, when they shall be chastised by their hand, they will learn to trust in God alone, and will withdraw their heart from the assistance of men. Hence infer that we cannot place our confidence in God unless we altogether withhold our heart from creatures; for we ought to rely on God alone in such a manner as not to think it a hardship to renounce all other grounds of confidence. Where this perfect confidence does not exist, there is no room for truth; for the heart is divided and double. (Psalm 12:2.)

21. A remnant shall return. This is a confirmation of the former statement. Yet in the words שאר ישוב, (Shear Yashub,) a remnant shall return, there appears to be an allusion to that passage in which Isaiah’s son was called Shear-jashub. (Isaiah 7:3.) In our observations on it, we stated that this peculiar name was given him in reference to the event, that it might be regarded as a pledge of the future deliverance concerning which his father prophesied. It was necessary that the Jews should be confirmed in various ways, that they might be convinced that the Lord would at length bring them back. This is also the design of what he immediately adds —

To the mighty God; that is, to him whom the people, after having returned from their former apostasy, will acknowledge to be the guardian of their salvation. This attribute, mighty, is ascribed to God for the sake of the occasion on which the words were used. He might have thought it sufficient to have expressed power by the name אל, (El,) God, which also signifies mighty; but he chose likewise to add to it גבור, (gibbor,) that is, strong or mighty, in order to excite the people to greater confidence. How was it possible for the people to betake themselves to the Assyrians and Egyptians, but because they did not think that God was sufficient for them? This is the source of all evils, when we are not fully convinced that in God is everything that can be desired for our salvation.

22. For though thy people be. He casts down hypocrites from foolish confidence; for they reckoned it enough to be the descendants of holy Abraham according to the flesh, and, therefore, on the sole ground of their birth, they wished to be accounted holy. Yet he exhorts the godly to patience, that they may learn to await calmly that calamity and diminution of their number, lest, when it took place, it should be unexpected, and give them uneasiness. He therefore comforts them, that they may not be grieved at so great desolation; for the Lord will at least collect a remnant of it.

The consumption decreed. כלה (chalah) means to finish, and it means also to consume. The latter is more appropriate. He calls this diminution of the people a consumption, and one that is completed; for he employs exaggerated language, the import of which is, that they were not far from utter extermination, there being very few that were saved.

The word Israel may be taken either in the genitive case, of Israel, or in the vocative case, O Israel, ¹⁶⁸¹⁶⁸     That is, the passage may either be rendered, Though thy people of Israel be as the sand of the sea; or, Though thy people, O Israel, be as the sand of sea. — Ed. so that in this way he addresses the patriarch Jacob, or all the godly under his name. But it is of little importance, for the meaning is the same, in whichsoever of these ways it be taken; and therefore it may be read in the genitive case, of Israel. Yet I am more inclined to view it as a proper name, to denote the true, and not the spurious Israelite. The bold address to the patriarch has a striking effect; for God, addressing a dead man, declares to the living that what he had formerly promised, (Genesis 13:16, 22:17,) that the posterity of Abraham would be like the sand of the sea, did not apply to a promiscuous multitude, which had apostatized from godliness, but that there would be a kind of interruption in a corrupt nation, till shortly afterwards it should be renewed.

Overflowing with righteousness, or overflowing righteousness. ¹⁶⁹¹⁶⁹     Shall overflow with (Heb. in, or, among) righteousness — Eng. Ver. Another consolation is added, that this very small company will overflow righteousness. When we see the Church distressed by such heavy calamities, that we think that it cannot be far from destruction, we are in danger of giving way to despondency, and of entertaining doubts about the mercy of God. Those whose minds are impressed with just views of the judgment of God, feel that this is the severest of all temptations. It was therefore necessary that godly minds should be fortified against it, that they might soothe their grief by pondering the benefit which would result from this calamity. The benefit was, that righteousness would overflow the whole world like a river; and he had formerly noticed this, when he said (Isaiah 10:20) that the remnant would trust in God in truth

The word righteousness is explained in various ways. Some refer it to the preaching of the gospel, because by means of it, as Paul says,

the righteousness of God is revealed from faith to faith, (Romans 1:17;)

and by the agency of the Apostles, who were a small remnant of the Jews, it spread over the whole world. (Mark 16:15.) Others choose rather to view it as meaning that that consumption was an evidence and proof of the righteousness of God in inflicting punishments so severe on his own people. But I prefer a more general exposition of it, namely, “This consumption will be sufficient to fill the whole world with righteousness. The remnant which shall survive it, though small, will be sufficient to cause such rivers of righteousness to flow, that the whole world shall be overflowed by them.”