All thy children shall be taught of the Lord: and great shall be the peace of thy children.

“And the surest sign that you have been taught of God is that you put into practice what you have been taught. Of that character are all who are called according to God's purpose, as it is written in the prophets, "They shall be all taught of God." The person, however, who has learned what ought to be done but does not do it, has not yet been "taught of God" according to grace but only according to the law, not according to the Spirit but only according to the letter. There are many who appear to do what the law commands through fear of punishment, not through love of righteousness, and such righteousness as this apostle calls "his own which is after the law"—a thing as it were commanded, not given.… When the free person keeps a commandment, he does it readily. And whosoever learns his duty in this spirit does everything that he has learned ought to be done.”

“Sing, O barren one. Here, against the casting down of things, he promises the remedy of exaltation: and first he promises a multitude against a paucity; second, the restoration of honor against confusion, do not fear; third, prosperity against former adversity, poor little one. Concerning the first he does three things. First he foretells the multitude of children, indicating the praise of thanksgiving: "O barren one" — Jerusalem, who do not bear; "because forsaken" — deserted; "sing" — to God, for the benefits granted. The gladness of those who praise: "sing forth praise" — for a song is the exultation of the mind broken forth into voice; and the greatness of the gladness: "neigh" — in the manner of a horse, unable because of the greatness to form a voice to express it. Jer. 31: Exult in gladness, Jacob. Ps. 146: Let praise of our God be pleasant and comely. And promising the multitude of children: "because many" — as if to say, your children will be multiplied more, although you are deserted, than that of the cities which have husbands for begetting. 1 Reg. 2: until the barren woman has borne very many, and she who had many children is weakened. Second he exhorts to the enlargement of the place, under the metaphor of a tent: "enlarge the place" — as to the ground on which it is extended; "the skins" — by which it is covered; "the cords" — by which the pegs are bound; "the nails" — by which the boards are joined, or the pegs themselves. And these are read to have been in the tabernacle of the covenant: Exod. 26, and 36. On account of this multitude of men it is fitting to seek a greater dwelling than the land of promise is. Above, 49: still the children of barrenness say, etc. Third he foretells the fulfillment of the exhortation: "for to the right hand" — as if to say, you shall spread yourself on every side: which was fulfilled in the time of the Maccabees, when certain cities from the region of Samaria, and from others, were added to the kingdom of the Jews. Gen. 24: may your seed possess the gates of your enemies. Do not fear. Here he promises the restoration of former honor, against the confusion which they had previously endured. Second, the firmness of the promise: as in the days of Noah. Concerning the first he does two things. First he promises the forgetting of the former confusion: "you shall not be confounded" — inwardly; "you shall not blush" — outwardly. "You shall be ashamed" — from the consideration of your baseness; "you shall forget" — because of the abundance of glory; "of youth" — when you sinned in the desert; "of widowhood" — when you were separated from God in the captivity of Babylon. Above, 45: you shall not be confounded, nor shall you blush. Sopho. 3: in that day you shall not be confounded for all your devisings. Second he promises the restoration of former honor: and first he sets down the restoration as to dominion, "because he shall rule"; above, 26: O Lord, they have possessed us; and as to marriage, "a forsaken wife." Jerem. 3: if a man put away his wife, and she depart from him and marry another man, shall she return to him any more? Second he promises the enlargement of honor as to the multitude of honors: "says the Lord" — "in a little" — you have suffered little in respect of the things which I, having mercy, shall bestow on you. 2 Corinth. 4: for that which is at present is momentary. And as to duration, "in a moment" — as if to say: for a brief time you have felt my anger, in respect of that in which I will have mercy on you. Above, 26: hide yourself a little while. But all these things that have been said are expounded mystically of the calling of the Gentiles: because the Gentile world, barren at first, afterward gathered many children, according to the Gloss. As in the days. Here he shows the firmness of the promise. And first from the likeness of the former promise: "I have sworn" — I have firmly determined, provided, however, that you remain in my precepts. Gen. 9: I will establish my covenant with you, and with your seed after you. Eccli. 44: the covenants of the age. Second, from the working of stable creatures: "for the mountains" — as if to say: it is easier for mountains and hills to be changed than for my words to be made void. Or by mountains and hills, the powerful of the world. Ps. 45: we will not fear, while the earth is troubled. Note on that word, "sing, O barren one," that there is a barrenness, first, of perverse action. Job 15: the congregation of the hypocrite is barren. Second, of sacred contemplation. Genes. 29: Rachel was barren. Third, of temporal tribulation. Above, 49: the children of barrenness shall still say in your ears. Likewise note, on that phrase "enlarge the tent," that the heart must be enlarged, first, on account of the greatness of the guest. Jerem. 23: do not I fill heaven and earth, says the Lord? Second, on account of the multitude of gifts. Below, 60: you shall see, and abound, and your heart shall be enlarged. Third, on account of the fulfilling of the way. Psalm. 118: I have run the way of your commandments. Likewise on that phrase "in great mercies," that the mercies to come are great: first because they are intrinsic. Rom. 8: I reckon that the sufferings of this time are not worthy to be compared to the glory to come that shall be revealed in us. Second, because they are eternal. 2 Cor. 4: for the things which are seen are temporal; but the things which are not seen are eternal. Third, because they are perfect. Luc. 1: for behold, from now on all generations shall call me blessed. Fourth, because they are extended to many. Luc. 14: a certain man made a great supper, and invited many. Fifth, because they are whole. Apoc. 21: God shall wipe away every tear from the eyes of the saints. Poor little one. Here he promises prosperity against adversity: and first he recalls the former adversity: "poor little one" — Jerusalem despoiled of goods; "by tempest" — by adversity. Above, 18: to a nation rent and torn I will send you. Second he promises future prosperity, both as to the abundance of goods, setting forth a metaphor: "behold I will lay" — as it were in a pavement, by the "stones," "precious," signifying men eminent in virtues, "in order," each one in his own order: Tob. 13: the gates of Jerusalem; and explaining it as to the doctrine of divine knowledge: "all" — Jer. 31: I will give my law in their bowels, and write it in their heart. As to the abundance of peace: "multitude." Psalm. 118: much peace have they that love your law. And as to the justice of works: "and in justice." Above, 1: Sion shall be redeemed in judgment; and they shall bring her back in justice. Second, as to the freedom from evils, promising first the escape from dangers: "depart" — that is, you shall depart, because you shall not suffer calumny. Ps. 71: he shall humble the slanderers. Second, the adherence of strangers: "behold, the sojourner" — because many from among the Gentiles going forth from captivity adhered. Below, 56: let not the son of the stranger, who adheres to the Lord, say: the Lord will divide me by separation from his people. Third, promising the destruction of enemies: "behold I." And first he shows the power of the one promising, setting forth a comparison: "the smith" — the persecutor, who blows upon the vessels in the fire of tribulation, adversaries, according to his own will: Job 41: his breath, coals; and explaining it: "I have created." 1 Reg. 2: the Lord kills and makes alive. Second he sets forth the promise: "every vessel" — that is, he will scatter every thing formed, as to those who assail by deeds; and "every tongue," as to those who assail by words. Above, 41: and they shall be as if they were not.”

“And all thy children shall be taught of the Lord,.... The children of the church, who are born in her, and nursed up at her side, and who are the children of God by adoption, which is made manifest by regeneration; these the Lord will take care of that they be "taught", even "all" of them, from the least to the greatest, Jer 31:34, they shall be taught of the Lord himself, by his ministers, word, and ordinances, as means, and by his Spirit, as the efficient; by whom they are taught to know themselves, their vileness and sinfulness, their folly and weakness, their want of right counsels, and the insufficiency of their own to know Christ, and the way of salvation by him; him as the only Saviour, able and willing so to know him as to believe in him, receive him, and walk on in him; this had an accomplishment in the first times of the Gospel; see Joh 6:45 and will have a further one in the latter day, when there will be a greater effusion of the Spirit, when the doctrines of the Gospel will be taught and understood more clearly, fully, and largely: and great shall be the peace of thy children; the inward peace of their minds in and from Christ, arising from a view of their justification by his righteousness, from the sprinklings of his blood upon their consciences, and from the discoveries of his love to their souls, enjoyed in a way of believing, and by means of the word and ordinances; also peace among themselves, harmony and concord, and no more strifes, contentions, and animosities; likewise outward peace from enemies, no more persecution or war. This word includes all kind of prosperity, external and internal, temporal and spiritual. This, with the following verses, explain the figurative phrases used in the foregoing. These words are applied by the Jews (a) to the times of the Messiah, when all Israel shall learn the law from the Lord; so the Targum, "all thy children shall know the law of the Lord;'' but it is much better understood of all the children of the church, the true Israel of God, whether Jews or Gentiles, learning the Gospel of Christ. (a) Midrash Tillim, apud Yalkut in Psal. xxi. 1.”

“Quoted by the Saviour (Joh 6:45), to prove that in order to come to Him, men must be "drawn" by the Father. So Jer 31:34; Mic 4:2; Co1 2:10; Heb 8:10; Heb 10:16; Jo1 2:20. great . . . peace--generally (Psa 119:165). Specially referring to the peaceful prosperity which shall prevail under Messiah in the latter days (Isa 2:4, Isa 9:6).”

“The outward glory of the city is only the manifestation, which strikes the senses, of the spiritual glory of the church dwelling therein. "And all thy children will be the learned of Jehovah; and great the peace of thy children." We translate both halves of the v. as substantive clauses, although they might be accusatives of both the object and predicate, dependent upon שׂמתּי. ה למּוּדי are disciples of Jehovah, but, as in Isa 50:4, with the subordinate idea of both docility and learning. The children of Jerusalem will need no instruction from man, but carry within them the teaching of heaven, as those who are "taught of God" (διδακτοὶ Θεοῦ, Joh 6:45; θεοδίδακτοι, Th1 4:9). Essentially the same promise is given in Joe 3:1-2, and Jer 31:34; and represented in Jo1 2:20 ("Ye have the anointing of the Holy One, and know all things") as already fulfilled. In the place of the former inward and outward distress, there has no entered shâlōm, perfect inward and outward peace, complete salvation, and blessedness as its result. רב is an adjective, for this form cannot be shown to have existed as a syncopated third pers. praet., like שׁח, חי (= חיי). The v. closes palindromically.”