Sing, O heavens; and be joyful, O earth; and break forth into singing, O mountains: for the LORD hath comforted his people, and will have mercy upon his afflicted.

Give praise, O ye heavens, and rejoice, O earth, ye mountains, give praise with jubilation: because the Lord hath comforted his people, and will have mercy on his poor ones.

Shout, ye heavens; and be joyful, thou earth; and break forth into singing, ye mountains: for Jehovah hath comforted his people, and will have mercy upon his afflicted ones.

Sing, O heavens, and joy, O earth, And break forth, O mountains, with singing, For comforted hath Jehovah His people, And His afflicted ones He doth pity.

Let your voice be loud in song, O heavens; and be glad, O earth; make sounds of joy, O mountains, for the Lord has given comfort to his people, and will have mercy on his crushed ones.

Give praise, O heavens! And exult, O earth! Let the mountains give praise with jubilation! For the Lord has consoled his people, and he will take pity on his poor ones.

Laudate, coeli; et exulta, terra; et erumpite, montes, in laudera; quia consolatus est Iehova populum suum, et pauperum suorum miserebitur.

Praise, O heavens; and rejoice, O earth. Though he exhorts and encourages all the godly to thanksgiving, yet he likewise aims at confirming the promise which might have been regarded as doubtful; for afflictions trouble our consciences, and cause them to waver in such a manner that it is not so easy to rest firmly on the promises of God. In short, men either remain in suspense, or tremble, or utterly fall and even faint. So long as they are oppressed by fear or anxiety, or grief, they scarcely accept of any consolation; and therefore they need to be confirmed in various ways. This is the reason why Isaiah describes the advantages of this deliverance in such lofty terms, in order that believers, though they beheld nothing around them but death and ruin, might sustain their heart by the hope of a better condition. Accordingly, he places the subject almost before their eye, that they may be fully convinced that they shall have the most abundant cause of rejoicing; though at that time they saw nothing but grief and sorrow. Let us therefore remember, that whenever the Lord promises anything, we ought to add thanksgiving, that we may more powerfully affect our hearts; and next, that we ought to raise our minds to the power of God, who exercises a wide and extensive dominion over all the creatures; for as soon as he lifts his hand, "heaven and earth" are moved. If the tokens of his wonderful power are to be seen everywhere, he intends that there shall be an eminent and remarkable example of it in the salvation of the Church. And he wilt have compassion on his poor. By this metaphor the Prophet shews that no obedience which is rendered to God by heaven and earth is more acceptable to him than to join together and lend their mutual aid to his Church. Moreover, that believers may not faint under the weight of distresses, before promising to them consolation from God, he exhorts them calmly to bear distresses; for by the word poor he means that the Church, in this world, is liable to many calamities. In order, therefore, that we may partake of the compassion of God, let us learn, under the cross and amidst many annoyances, to strive after it with sighs and tears.

Sing, O heavens - In view of the glorious truths stated in the previous verses, that kings should rise up, and princes worship; that the Messiah would be for a light to the Gentiles, and that the true religion would be extended to each of the four quarters of the globe. The idea in this verse is, that it was an occasion on which the heavens and the earth would have cause to exult together. It is common in Isaiah thus to interpose a song of praise on the announcement of any great and glorious truth, and to call on the heavens and the earth to rejoice together (see the notes at Isaiah 12:1-6; Isaiah 42:10-11; Isaiah 44:23).

Break forth into singing, O mountains "Ye mountains, burst forth into song" - Three ancient MSS. are without the י yod or the conjunction ו vau before the verb: and so the Septuagint, Syriac, and Vulgate.

Sing, O (s) heavens; and be joyful, O earth; and break forth into singing, O mountains: for the LORD hath comforted his people, and will have mercy upon his afflicted.
(s) Read (Isaiah 44:23).

Sing, O heavens, and be joyful, O earth,.... Which may be understood of the heavens, and the earth by a personification, a figure usual in Scripture, to express the greatness of the benefit received, and to raise thankfulness and admiration in the hearts of God's people; see Psalm 90:11 or by the heavens may be meant the angels in heaven, who, as they rejoice at the conversion of a single sinner, will much more rejoice at such numerous conversions among Jews and Gentiles, here prophesied of, Luke 15:10 and, by the "earth", the saints on earth, the excellent in it, who have a more immediate concern in, and must be affected with, the case here represented:
and break forth into singing, O mountains; such as are in high office either in the state, as Christian kings and princes, Isaiah 49:23 or in the church, as prophets and apostles, Revelation 18:20. The reason of all this is,
for the Lord hath comforted his people; with the discoveries of his love and grace; by his gracious presence among them; by the coming of Christ unto them in a spiritual way; by sending his Spirit, and renewing the face of things, and reviving his work in the midst of them; by the pure and powerful preaching of the Gospel, and comfortable administration of Gospel ordinances; and by large additions of converts made unto them:
and will have mercy upon his afflicted, or "poor", or "meek" and "humble" ones, as the words (l) may be rendered: the Lord's people is a poor and afflicted people, poor in a temporal and spiritual sense; the church and interest of Christ is in a poor and low condition: the Lord's people are afflicted outwardly and inwardly, and so become meek, and are kept humble; these the Lord, in the latter day, will raise from a low and distressed condition to a more exalted and comfortable one; which will be an instance of his mercy and compassion, and be matter of joy unto them.
(l) "pauperum suorum", V. L. "pauperes suos", Forerius; "inopes suos", Vitringa; "humiles", Sept. "mansuetorum", Targum.

Let there be universal joy, for God will have mercy upon the afflicted, because of his compassion; upon his afflicted, because of his covenant. We have no more reason to question his promise and grace, than we have to question his providence and justice. Be assured that God has a tender affection for his church and people; he would not have them to be discouraged. Some mothers do neglect their children; but God's compassions to his people, infinitely exceed those of the tenderest parents toward their children. His setting them as a mark on his hand, or a seal upon his arm, denotes his being ever mindful of them. As far as we have scriptural evidence that we belong to his ransomed flock, we may be sure that he will never forsake us. Let us then give diligence to make our calling and election sure, and rejoice in the hope and glory of God.

So Revelation 12:12. God will have mercy on the afflicted, because of His compassion; on His afflicted, because of His covenant.

In this return of the exiles from every quarter of the globe to their fatherland, and for this mighty work of God on behalf of His church, which has been scattered in all directions, the whole creation is to praise Him. "Sing, O heavens; and shout, O earth; and break out into singing, O mountains! for Jehovah hath comforted His people, and He hath compassion upon His afflicted ones." The phrase רנּה פּצח, like ורנּן פּצח (which occurs in Psalm 98:4 as well as in Isaiah), is peculiarly Isaiah's (Isaiah 14:7, and several times in chapters 40-66). "The afflicted ones" (‛ăniyyı̄m) is the usual Old Testament name for the ecclesia militans. The future alternates with the perfect: the act of consolation takes place once for all, but the compassion lasts for ever. Here again the glorious liberty of the children of God appears as the focus from which the whole world is glorified. The joy of the Israel of God becomes the joy of heaven and earth. With the summons to this joy the first half of the prophecy closes; for the word תאמר, which follows, shows clearly enough that the prophecy has merely reached a resting-point here, since this word is unsuitable for commencing a fresh prophecy.