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17. Thus saith Jehovah. I connect this verse with the four following verses, because they relate to the same subject, and because in them the Lord promises deliverance to his people, but in such a manner as first to shew that it was through their own fault that they were reduced to slavery; that is, that the people might not murmur and object that it would have been better to be kept in their native country, if the Lord wished to assist them, than to be carried away and brought back; for physicians who cure a disease which they might have prevented, are held to be less entitled to thanks. The Prophet therefore meets this, and says that this befell the people through their own fault, and that they might have escaped this destruction, if they had attended to the commandments of the Lord. He shews, therefore, that this was a just reward of the wickedness of the people; for it was not the Lord who had formerly prevented the people from enjoying prosperity, but they had rejected his grace. And yet he declares that the Lord will go beyond this wickedness by his goodness, because he will not suffer his people to perish, though he afflict them for a time.

Teaching thee profitably. He means that God’s “teaching” is such that it might keep the people safe and sound, if they would only rest upon it. Now, the Lord “teaches,” not for his own sake, but in order to promote our salvation; for what profit could we yield to him? It is therefore by “teaching” that he makes provision for the advantage of each of us, that, having been instructed by it, we may enjoy prosperity. But since, through our ingratitude, we reject the benefit that is freely offered to us, what remains but that we shall miserably perish? Justly, therefore, does Isaiah reproach the Jews that, if they had not defrauded themselves of the benefit of teaching, nothing that was profitable for their salvation would have been hidden from them. And if these things were said of the Law, that the Lord, by means of it, “taught his people profitably,” what shall we say of the Gospel, in which everything that is profitable for us is very fully explained? ²³⁸²³⁸     “When God the Redeemer says here that he ‘teacheth his people, להועיל (lehognil) to profit,’ and that he provides for their true interests, there can be no doubt that he makes this declaration concerning himself, κατ᾿ ἀντίθεσιν by way of contrast with Idols, false gods, the worship of which not only did no good, but even did harm, and brought great hurt and damage to their worshippers. (Compare Isaiah 44:10, and 45:19.) Hence also God says by, Jeremiah 2:11, ‘Is there any nation that changeth its gods, though they are not gods? But my people have changed their glory בלא יועיל (belo yognil) for that from which they derive no advantage;’ or rather, from which they suffer the greatest loss and damage.” — Vitringa.

Hence, also, it is manifest, how shocking is the blasphemy of the Papists who say that the reading of the Holy Scripture is dangerous and hurtful, in order to terrify unlearned persons ²³⁹²³⁹     “Afin de destourner les idiots (qu’ils appellent) de lira dedans.” “In order to dissuade idiots (as they call them) from reading it.” from reading it. Shall they then accuse God of falsehood, who declares, by the mouth of the Prophet, that it is “profitable?” Do they wish us to believe them rather than God? Though they impudently vomit out their blasphemies, we certainly ought not to be dissuaded from the study of it; for we shall learn by actual experience with what truthfulness Isaiah spoke, if we treat the Holy Scriptures with piety and reverence.

Leading thee. These words shew more clearly the profitableness which was mentioned a little before. He means that the way of salvation is pointed out to us, if we hearken to God when he speaks; for he is ready to become our guide during the whole course of our life, if we will only obey him. In this manner Moses testifies that he “set before the people life and death.” (Deuteronomy 30:19.) Again, it is said, (Isaiah 30:21,) “This is the way, walk ye in it;” for the rule of a holy life is contained in the Law, which cannot deceive. “I command thee,” says Moses, “that thou love the Lord thy God, and walk in his ways, and keep his commandments and statutes and judgments, that thou mayest live and be multiplied, and that the Lord may bless thee in the land which thou goest to possess.” (Deuteronomy 30:16.) In a word, they who submissively yield obedience are not destitute either of counsel or of the light of understanding.

18. O if thou hadst hearkened to my commandments! As the people might complain of being carried into captivity, the Prophet, intending to meet those murmurs, points out the cause, which was, that they did not submit to the doctrine of salvation, and did not allow themselves to derive any advantage from it. He undoubtedly alludes to the song of Moses, in which very nearly the same form of expression occurs, “O that they were wise, and that they understood!” (Deuteronomy 32:29.) לוא (lu) denotes a wish, O if! or, Would that!

Not only does the Lord expostulate with the Jews for having disregarded the advantage, or “profitableness,” (verse 17,) which was offered to them, but like a father, he deplores the wretchedness of his children; for he takes no pleasure in our distresses, and is not severe, unless when we constrain him by our wickedness. This is therefore a figurative appropriation of human affections, by which God compassionates the ruin of those who chose rather to perish of their own accord than to be saved; for he was ready to bestow blessings of every kind, if we did not drive him away by our obstinacy. Yet it would be foolish to attempt to penetrate into his secret counsel, and to inquire why he did not add the efficacy of the Spirit to the external word; for nothing is said here about his power, but there is only a reproof of the hard-heartedness of men, that they may be rendered inexcusable. Certainly, whenever God invites us to himself, there is clearly laid before us, in his word, complete happiness, which we wickedly reject.

Then would thy peace have been as a river. The word peace, as we have formerly explained, ²⁴⁰²⁴⁰     See Commentary on Isaiah, vol. 1, p 312; vol. 2, pp. 214, 227. denotes all prosperous events. It is as if he had said, “The richest plenty of spiritual blessings would have flowed to thee abundantly, and thou wouldst have had no occasion to dread any change; because the blessing of God upon believers is never dried up.

And thy righteousness as the waves of the sea. We might explain righteousness, which he connects with peace, to mean what is expressed by the familiar phrase (ton bon droict) “thy right.” But I choose rather to understand by the word “Righteousness” a well regulated commonwealth, in which everything is administered in a regular and orderly manner; as if he had said, “Thou wouldest have had everything well conducted at home, and wouldest have had plenty and abundance of all things.” And properly does he connect this condition with “peace;” for when government is overtumed, everything goes wrong and is out of order, and it is utterly impossible that we shall enjoy “peace,” if there be not “righteousness,” that is, a just and equitable administration of affairs. If, therefore, we are desirous of “peace,” let us likewise wish to have that blessed condition on which the Lord bestows his blessing. Here some commentators speculate about spiritual “righteousness,” and the forgiveness of sins; but they wander far from the Prophet’s meaning, which is plain and obvious.