1 The king rejoices in your strength, Yahweh! How greatly he rejoices in your salvation!
*Minor differences ignored. Grouped by changes, with first version listed as example.
The king will rejoice in thy strength, O Jehovah! David could have given thanks to God in private for the victories and other signal favors which he had received from him; but it was his intention to testify not only that it was God who elevated him to the throne, but also that whatever blessings God had conferred upon him redounded to the public good, and the advantage of all the faithful. In the beginning of the psalm the believing Israelites express their firm persuasion that God, who had created David to be king, had undertaken to defend and maintain him. It therefore appears that this psalm, as well as the preceding, was composed for the purpose of assuring the faithful that the goodness of God in this respect towards David would be of long duration, and permanent; and it was necessary, in order to their being established in a well-grounded confidence of their safety; to hope well of their king, whose countenance was as it were a mirror of the merciful and reconciled countenance of God. The sense of the words is: Lord, in putting forth thy power to sustain and protect the king, thou wilt preserve him safe; and, ascribing his safety to thy power, he will greatly rejoice in thee. The Psalmist has doubtless put strength and salvation for strong and powerful succor; intimating, that the power of God in defending the king would be such as would preserve and protect him against all dangers. In the second verse there is pointed out the cause of this joy. The cause was this: that God had heard the prayers of the king, and had liberally granted him whatever he desired. It was important to be known, and that the faithful should have it deeply impressed on their minds, that all David's successes were so many benefits conferred upon him by God, and at the same time testimonies of his lawful calling. And David, there is no doubt, in speaking thus, testifies that he did not give loose reins to the desires of the flesh, and follow the mere impulse of his appetites like worldly men, who set their minds at one time upon this thing, and at another time upon that, without any consideration, and just as they are led by their sensual lusts; but that he had so bridled his affections as to desire nothing save what was good and lawful. According to the infirmity which is natural to men, he was, it is true, chargeable with some vices, and even fell shamefully on two occasions; but the habitual administration of his kingdom was such that it was easy to see that the Holy Spirit presided over it. But as by the Spirit of prophecy the Psalmist had principally an eye to Christ, who does not reign for his own advantage, but for ours, and whose desire is directed only to our salvation, we may gather hence the very profitable doctrine, that we need entertain no apprehension that God will reject our prayers in behalf of the church, since our heavenly King has gone before us in making intercession for her, so that in praying for her we are only endeavoring to follow his example.
The king shall joy in thy strength - King David, who had achieved the victory which he had desired and prayed for, Psalm 20:1-9. This is in the third person, but the reference is doubtless to David himself, and is to be understood as his own language. If it be understood, however, as the language of "the people," it is still an ascription of praise to God for his favor to their king. It seems better, however, to regard it as the language of David himself. The word ""strength"" here implies that all the success referred to was to be traced to God. It was not by the prowess of a human arm; it was not by the valor or skill of the king himself; it was by the power of God alone.
And in thy salvation - In the salvation or deliverance from foes which thou hast granted, and in all that thou doest to save. The language would embrace all that God does to save his people.
How greatly shall he rejoice! - Not only does he rejoice now, but he ever will rejoice. It will be to him a constant joy. Salvation, now to us a source of comfort, will always be such; and when we once have evidence that God has interposed to save us, it is accompanied with the confident anticipation that this will continue to be the source of our highest joy forever.
The king shall joy - מלך משיחא melech Meshicha, "the King Messiah." - Targum. What a difference between ancient and modern heroes! The former acknowledged all to be of God, because they took care to have their quarrel rightly founded; the latter sing a Te Deum, pro forma, because they well know that their battle is not of the Lord. Their own vicious conduct sufficiently proves that they looked no higher than the arm of human strength. God suffers such for a time, but in the end he confounds and brings them to naught.
"To the chief Musician, A Psalm of David." The king shall (a) joy in thy strength, O LORD; and in thy salvation how greatly shall he rejoice!
(a) When he will overcome his enemies, and so be assured of his calling.
The king shall joy in thy strength, O Lord,.... Either in that strength which is in Jehovah himself, in whom is everlasting strength; and which is seen in the works of creation and providence, and is the same in Christ himself, as he is the mighty God; or else in the strength which Jehovah communicated to Christ as man, whereby he was strengthened in his human nature to go through and complete the work of man's redemption; or in the strength which the Lord puts forth, and the power which he exerts towards and upon his people, in conversion; which is the produce of the exceeding greatness of his power; and in strengthening them, from time to time, to exercise grace, discharge duty, and withstand temptations and sin; and in keeping them safe to the end; in supporting them under all their trials, and in carrying on and finishing the work of faith upon their souls; all which is matter of joy to Christ;
and in thy salvation how greatly shall he rejoice? meaning either his own salvation by the Lord, from all his sorrows and troubles, and out of the hands of all enemies, being in the presence of God, where is fulness of joy, Psalm 16:9; or else the salvation of his people by him, which Jehovah appointed them to, secured for them in the covenant of grace, sent Christ to work out for them, applies by his Spirit, and at last puts into the full possession of: Christ rejoices at the effectual calling and conversion of his people, when salvation is brought near unto them; and especially at their glorification, when they shall be in the full enjoyment of it; then will they be his joy, and crown of rejoicing: this is the joy that was set before him, which made him go so cheerfully through his sufferings and death for them, Hebrews 12:2; the reasons of this joy are, because of the great love he bears to them; the interest and property he has in them; his undertakings for them, as their surety, to bring them safe to glory; his purchase of them by his blood; his intercession for them, that they might be with him to behold his glory; and, last of all, because of his Father's glory, his own glory, and the glory of the blessed Spirit, which are concerned in the salvation of these persons.
Happy the people whose king makes God's strength his confidence, and God's salvation his joy; who is pleased with all the advancements of God kingdom, and trusts God to support him in all he does for the service of it. All our blessings are blessings of goodness, and are owing, not to any merit of ours, but only to God's goodness. But when God's blessings come sooner, and prove richer than we imagine; when they are given before we prayed for them, before we were ready for them, nay, when we feared the contrary; then it may be truly said that he prevented, or went before us, with them. Nothing indeed prevented, or went before Christ, but to mankind never was any favour more preventing than our redemption by Christ. Thou hast made him to be a universal, everlasting blessing to the world, in whom the families of the earth are, and shall be blessed; and so thou hast made him exceeding glad with the countenance thou hast given to his undertaking, and to him in the prosecution of it. The Spirit of prophecy rises from what related to the king, to that which is peculiar to Christ; none other is blessed for ever, much less a blessing for ever.
The pious are led by the Psalmist to celebrate God's favor to the king in the already conferred and in prospective victories. The doxology added may relate to both Psalm; the preceding of petition, chiefly this of thanksgiving, ascribing honor to God for His display of grace and power to His Church in all ages, not only under David, but also under his last greatest successor, "the King of the Jews." (Psalm 21:1-13)
thy strength . . . thy salvation--as supplied by Thee.
(Hebrews.: 21:2-3) The Psalm begins with thanksgiving for the bodily and spiritual blessings which Jahve has bestowed and still continues to bestow upon the king, in answer to his prayer. This occupies the three opening tetrastichs, of which these verses form the first. עז (whence עזּך, as in Psalm 74:13, together with עזּך, Psalm 63:3, and frequently) is the power that has been made manifest in the king, which has turned away his affliction; ישׁוּעה is the help from above which has freed him out of his distress. The יגיל, which follows the מה of the exclamation, is naturally shortened by the Kerמ into יגל (with the retreat of the tone); cf. on the contrary Proverbs 20:24, where מה is interrogative and, according to the sense, negative). The ἁπ. λεγ. ארשׁת has the signification eager desire, according to the connection, the lxx δέηεσιν, and the perhaps also cognate רוּשׁ, to be poor; the Arabic Arab. wrš, avidum esse, must be left out of consideration according to the laws of the interchange of consonants, whereas ירשׁ, Arab. wrṯ, capere, captare (cf. Arab. irṯ = wirṯ an inheritance), but not רוּשׁ (vid., Psalm 34:11), belongs apparently to the same root. Observe the strong negation בּל: no, thou hast not denied, but done the very opposite. The fact of the music having to strike up here favours the supposition, that the occasion of the Psalm is the fulfilment of some public, well-known prayer.
*More commentary available at chapter level.