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17. And the work of righteousness shall be peace. A little before, he censured severely that peace which made the Jews drowsy and slothful; he now promises a different kind of repose, which will be a striking proof of the love of God, who has received them into favor, and will faithfully guard them. We ought therefore to observe the implied contrast between that brutal repose which the reprobate think that they obtain by their presumption in committing every kind of wickedness, and in which they also fall asleep, and that different kind of repose, on the other hand, which the children of God obtain by a religious and holy life, and which Isaiah exhorts us to desire, shewing that we ought fearlessly to believe that a blessed and joyful peace awaits us when we have been reconciled to God.

In this way he recommends to them to follow uprightness, that they may obtain assured peace; for, as Peter declares, there is no better way of procuring favor, that no man may do us injury, than to abstain from all evil-doing. (1 Peter 3:13.) But the Prophet leads them higher, to aim at a religious and holy life by the grace of God; for nothing is more unreasonable than that wicked men should desire to have peace, while they are continually fighting against God. That wish is indeed common; for hardly one person in a hundred shall be found who does not loudly extol peace, while at the same time every man raises up enemies to himself in the earth, and all in vast crowds disturb heaven and earth by their crimes. Now, the latter repose, being perpetual, is compared by him to the former, which is slight and momentary.

The effect of righteousness. When peace receives this designation, let us learn that, as wars proceed from the wrath of God, which we provoke by our wickedness, so peace springs from his blessing. When, therefore, we see enemies enraged to battle, and rising furiously against us, let us seek no other remedy than repentance; for the Lord will easily allay commotions when we have returned to him. He it is, as the Psalmist says, who

“maketh wars to cease to the ends of the earth, who breaketh the bow, and cutteth the spear in pieces, and burneth the chariots in the fire.” (Psalm 46:9.)

We have already said that these things do not relate exclusively to Hezekiah, but must be referred to Christ.

18. And my people shall dwell. As we have said that spiritual righteousness is that which has its seat in the hearts of men, we must say the same thing about peace, which is the fruit of it. Accordingly, when quiet habitations and resting-places are here mentioned, let us remember the saying of Paul, “justified by faith, we have peace with God.” (Romans 5:1.) When Christ says that he “leaves” this peace to the disciples, (John 14:27,) he affirms that “it cannot be given by the world;” and we ought not to wonder at this, for, as the same Apostle Paul informs us in another passage, “this peace surpasses all understanding.” (Philippians 4:7.) Having obtained this righteousness, we are no longer restless or alarmed within, as when we feel in the gnawings of conscience the wrath of God. A bad conscience is always alarmed, and harassed by wretched uneasiness.

Wicked men must therefore be uneasy, and distressed by a variety of terrors; for where righteousness is banished that peace cannot be found; and where Christ reigns, there alone do we find true peace. Assured peace, therefore, is enjoyed by none but believers, who appeal to the heavenly tribunal, not only by their piety, but by their reliance on the mercy of God. Hence we infer that Christ does not yet reign where consciences are uneasy, and tossed by the various waves of doubts, as must be the case with Papists and all others who are not built on the sacrifice of Christ and the atonement obtained through him.

19. And the hail. We have already said that the prophets are accustomed frequently to describe under figures the reign of Christ; for they borrow their metaphors from an earthly kingdom, because our ignorance would make it almost impossible for us to comprehend, in any other way, the unspeakable treasure of blessings. The meaning is, “The Lord will remove from his people distresses and annoyances, and will make them fall on others;” because here we are liable to various storms and tempests, and must endure rain, hail, showers, winds, and tempests. He says that God, by his wonderful providence, will prevent all distresses from doing any injury to believers, because he will drive their violence in another direction.

By forests he means unfrequented and desert places, where there are no crowds of men. Hence we learn that, when we are under the guardianship of Christ, we are protected from inconveniences and dangers, but that, at the same time, various storms and tempests are ready to burst on our heads. But the Lord is our deliverer, who turns away in another direction the evils that are approaching, or rescues us when we are in danger.

And the city shall be situated to a low place. ³⁴⁴³⁴⁴    {Bogus footnote} In order to confirm what he had said about peace, he says, that “cities,” which shall be situated on level ground, will be out of danger; for at that time it was customary to build on high and elevated places, that the access to them might be more difficult. “Such,” says he, “will be God’s protection of his people, that they will not need the ordinary fortifications, because the city may be safely set down in valleys; and even although it be liable to the attacks of enemies, it will sustain no inconvenience, for the hand of the Lord will protect it.” We must not therefore seek safety by relying on our defences, lest we be immediately driven from our nest; but since our heavenly Father deigns to provide for our safety, let us be satisfied with having him for our protector and guardian. ³⁴⁵³⁴⁵    {Bogus footnote}

20. Blessed are ye. He shews how great will be the change, when Christ shall begin to reign; for he had formerly said that so great would be the desolation, that “thorns and briers” would overspread the holy land, costly houses would be thrown down, and cities and palaces would be levelled with the earth. This would happen, when the incessant attacks of enemies should lay that country desolate. But now he says that they shall be blessed, because God will give them abundant produce of all fruits. That fertility which might have been described in simple language, he illustrates by figures, that they shall “sow in marshes,” and shall “send forth their cattle” into the fields without dread of losing them.

By waters some understand a rich and fertile soil; but the universal particle כל, (chōl,) all, leads me to take a different view; as if he had said, “Places which were overrun with waters shall be fit for sowing, and there will be no reason to fear that the water shall spoil our fields.” We are accustomed also to drive away oxen, and asses, and other animals, from fields, and especially from sown fields, that they may not eat the corn. But here he says that the corn will grow so thick and plentifully, that it shall be necessary to send oxen and asses to crop the early blade, as is commonly done when the corn is luxuriant. ³⁴⁶³⁴⁶    {Bogus footnote}

He calls them blessed, in accordance with the usage of the Hebrew language, because their labor will never be unprofitable. If it be objected that, under the reign of Christ, such fertility has never been seen, I acknowledge that, even when God has shewn the highest kindness to his people, still there have always been visible marks of the curse, which was entailed on mankind by the fall and revolt of Adam. (Genesis 3:17.) But since Christ has restored to believers the inheritance of the world, with good reason do the prophets assert that he would renew the earth, so as to remove its filthiness and restore that beauty which it had lost. They who complain that it is not yet fulfilled, ought to consider whether or not they themselves are purified from every stain of sin. And if they are still at a great distance from spiritual righteousness, let them be satisfied with enjoying the blessing of God according to the measure of regeneration, the full enjoyment of which we must not expect to obtain, till, freed from the pollution of the flesh, we shall bear the perfect image of God.