Verse-by-Verse Bible Commentary
Psalms 21:7

Clarke's Commentary

Verse Psalms 21:7. The king trusteth in the Lord — It was not by my skill or valour that I have gained this victory, but by faith in the strong, protecting, and conquering arm of JEHOVAH.

He shall not be moved. — Perhaps this may be best understood of him who was David's prototype. His throne, kingdom, and government, shall remain for ever.

Bridgeway Bible Commentary

Psalms 20-21 Before and after battle

These two psalms belong together as a pair. The former is a prayer for the king before he leads the people in battle; the latter, a thanksgiving after victory.
Addressing the king, the people call down God’s power and protection upon him (20:1-2). They pray that God will remember the king’s faithfulness and give him victory (3-5). The king replies that victory is certain, because he has God’s help. God’s power is greater than military might (6-8). In response, the people offer a further plea, brief and urgent, for God’s help (9).

The people join in thanksgiving to God that he has answered their prayer of the previous psalms (see Psalms 20:4). God has given the king his heart’s desire, enabling him to lead his people to victory (21:1-4). Although the king receives glory because of his victory, the glory is not self-centred. It is glory given him by God, in whom he trusts (5-7). Having offered thanks to God, the people turn and address the king. They assure him that through God’s power he will continue to have victory over all his enemies (8-12). King and people then unite in praise to God (13).

Coffman's Commentaries on the Bible

"For the king trusteth in Jehovah; And through the loving-kindness of the Most High he shall not be moved."

"The Most High" (Psalms 21:7). This is the God who was worshipped by Melchizedek, and also by Abraham who identified the Most High as identical in every way with Jehovah (Genesis 14:22). This title for Almighty God, "Signifies supreme dignity, unhampered power, and universal sway."The New Bible Commentary, Revised, p. 464.

"The worship of Yahweh as `God Most High' is widely evidenced in the Psalms (Psalms 9:2; Psalms 46:4; and Psalms 92:1)."Ibid. This might very well have resulted from David's capture of Salem (Jerusalem). the city of Melchizedek, associated with the title, `God Most High' in Genesis 14.

Barnes' Notes on the Whole Bible

For the king - David, the author of the psalm.

Trusteth in the Lord - All these blessings have resulted from his confiding in God, and looking to him for his favor and protection.

And through the mercy of the Most High - The favor of Him who is exalted above all; the most exalted Being in the universe. The word “mercy” here is equivalent to “favor.” He had already experienced God’s favor; he looked for a continuance of it; and through that favor he was confident that he would never be shaken in his purposes, and that he would never be disappointed.

He shall not be moved - He shall be firmly established. That is, his throne would be firm; he himself would live a life of integrity, purity, and prosperity; and the promises which had been so graciously made to him, and which extended so far into the future, would all be acomplished. The truth taught here is, that however firm or prosperous our way seems to be, the continuance of our prosperity, and the completion of our hopes and our designs, depend wholly on the “mercy” or the favor of the Most High. Confiding in that, we may feel assured that whatever changes and reverses we may experience in our temporal matters, our ultimate welfare will be secure. Nothing can shake a hope of heaven that is founded on his gracious promises as made through a Saviour.

Calvin's Commentary on the Bible

7.For the king trusteth. Here again the pious Israelites glory that their king shall be established, because he relies upon God; and they express at the same time how he relies upon him, namely, by hope or trust. I read the whole verse as one sentence, so that there is but one principal verb, and explain it thus:- The king, as he places by faith his dependence on God and his goodness, will not be subject to the disasters which overthrow the kingdoms of this world. Moreover, as we have said before, that whatever blessings the faithful attribute to their king, belong to the whole body of the Church, there is here made a promise, common to all the people of God, which may serve to keep us tranquil amidst the various storms which agitate the world. The world turns round as it were upon a wheel, by which it comes to pass, that those who were raised to the very top are precipitated to the bottom in a moment; but it is here promised, that the kingdom of Judah, and the kingdom of Christ of which it was a type, will be exempted from such vicissitude. Let us remember, that those only have the firmness and stability here promised, who betake themselves to the bosom of God by an assured faith, and relying upon his mercy, commit themselves to his protection. The cause or the ground of this hope or trust is at the same time expressed, and it is this, that God mercifully cherishes his own people, whom he has once graciously received into his favor.

Smith's Bible Commentary

Psalms 21:1-13

Again, to the chief musician, the psalm of David.

The king shall joy in thy strength, O LORD; and in thy salvation how greatly shall he rejoice! Thou hast given him his heart's desire, and you have not withheld the requests of his lips ( Psalms 21:1-2 ).

Now the Selah indicates, really, sort of a change of thought. It sort of introduces a new idea. It is just sort of a rest, and then introducing of a new idea, new thought pattern.

For you prevent him with the blessings of goodness: you set a crown of pure gold on his head. He asks for life from thee, and you gave it to him, even the length of days for ever and ever. His glory is great in thy salvation ( Psalms 21:3-5 ):

He is talking about the king's delight in the Lord, and how he was just so gracious for what God has done.

For thou hast made him most blessed for ever: thou hast made him exceeding glad with thy countenance. For the king trusts in the LORD, and through the mercy of the Most High he shall not be moved. Your hand shall find out all your enemies: your right hand shall find out those that hate thee. You will make them as a fiery oven in the time of thine anger: the LORD will swallow them up in his wrath, and the fire shall devour them. Their fruit will you destroy from the earth, and their seed from among the children of men. For they intended evil against thee: they imagined mischievous devices, that they are not able to perform. Therefore thou shalt make them to turn their back, when thou shalt make ready your arrows upon thy strings against the face of them. Be thou exalted, LORD, in your own strength: so will we sing of thy praise and thy power ( Psalms 21:5-13 ). "

Dr. Constable's Expository Notes

1. Joy in God’s strength 21:1-7

Dr. Constable's Expository Notes

Psalms 21

This royal psalm of thanksgiving is a companion to the preceding one in that it records David’s thanksgiving for the victory that he anticipated in Psalms 20.

Dr. Constable's Expository Notes

David saw his victory as a reward for his trust in Yahweh. Because the Most High King was faithful to His promises, David could be confident that he would remain securely on his throne.

Gill's Exposition of the Whole Bible

For the King trusteth in the Lord,.... That is, the King Messiah, as the Targum paraphrases it; he trusted in the Lord for his support and sustenance as man, for assistance and help in his time of trouble, and for deliverance out of it; he trusted in the Lord that he would hear him for himself, and for his people; and that he would glorify him with all glory, honour, majesty, and blessedness, before spoken of; see Psalms 22:8;

and through the mercy of the most High he shall not be moved; God the Father is the most High; Christ is called the Son of the Highest, and the Spirit the power of the Highest, Luke 1:32; there is mercy with him, which is a ground of hope and trust, in his people, and also in the Messiah; see Psalms 89:28; and some versions make the mercy of the most High to be what the King Messiah trusts in, reading the words b, "for the King trusteth in the Lord, and in the mercy of the most High"; but the accent "athnach", which distinguishes the propositions, will not admit of it; but the sense is, that because of the mercy, grace, goodness, and faithfulness of God in making and keeping his promises, Christ would not be and was not moved from his trust and confidence in the Lord; nor shall he even be removed from his throne of glory on which he sits; nor from the glorious and happy state in which he is: nor will it ever be in the power of his enemies to displace him; for these in time will be destroyed by him, as the following words show.

b So Genebrard, Muis,

Henry's Complete Commentary on the Bible

      7 For the king trusteth in the LORD, and through the mercy of the most High he shall not be moved.   8 Thine hand shall find out all thine enemies: thy right hand shall find out those that hate thee.   9 Thou shalt make them as a fiery oven in the time of thine anger: the LORD shall swallow them up in his wrath, and the fire shall devour them.   10 Their fruit shalt thou destroy from the earth, and their seed from among the children of men.   11 For they intended evil against thee: they imagined a mischievous device, which they are not able to perform.   12 Therefore shalt thou make them turn their back, when thou shalt make ready thine arrows upon thy strings against the face of them.   13 Be thou exalted, LORD, in thine own strength: so will we sing and praise thy power.

      The psalmist, having taught his people to look back with joy and praise on what God had done for him and them, here teaches them to look forward with faith, and hope, and prayer, upon what God would further do for them: The king rejoices in God (Psalms 21:1; Psalms 21:1), and therefore we will be thankful; the king trusteth in God (Psalms 21:7; Psalms 21:7), therefore will we be encouraged. The joy and confidence of Christ our King is the ground of all our joy and confidence.

      I. They are confident of the stability of David's kingdom. Through the mercy of the Most High, and not through his own merit or strength, he shall not be moved. His prosperous state shall not be disturbed; his faith and hope in God, which are the stay of his spirit, shall not be shaken. The mercy of the Most High (the divine goodness, power, and dominion) is enough to secure our happiness, and therefore our trust in that mercy should be enough to silence all our fears. God being at Christ's right hand in his sufferings (Psalms 16:8) and he being at God's right hand in his glory, we may be sure he shall not, he cannot, be moved, but continues ever.

      II. They are confident of the destruction of all the impenitent implacable enemies of David's kingdom. The success with which God had blessed David's arms hitherto was an earnest of the rest which God would give him from all his enemies round about, and a type of the total overthrow of all Christ's enemies who would not have him to reign over them. Observe, 1. The description of his enemies. They are such as hate him, Psalms 21:8; Psalms 21:8. They hated David because God had set him apart for himself, hated Christ because they hated the light; but both were hated without any just cause, and in both God was hated, John 15:23; John 15:25. 2. The designs of his enemies (Psalms 21:11; Psalms 21:11): They intended evil against thee, and imagined a mischievous device; they pretended to fight against David only, but their enmity was against God himself. Those that aimed to un-king David aimed, in effect, to un-God Jehovah. What is devised and designed against religion, and against the instruments God raises up to support and advance it, is very evil and mischievous, and God takes it as devised and designed against himself and will so reckon for it. (3.) The disappointment of them: "They devise what they are not able to perform," Psalms 21:11; Psalms 21:11. Their malice is impotent, and they imagine a vain thing,Psalms 2:1. (4.) The discovery of them (Psalms 21:8; Psalms 21:8): "Thy hand shall find them out. Though ever so artfully disguised by the pretences and professions of friendship, though mingled with the faithful subjects of this kingdom and hardly to be distinguished from them, though flying from justice and absconding in their close places, yet thy hand shall find them out wherever they are." There is no escaping God's avenging eye, no going out of the reach of his hand; rocks and mountains will be no better shelter at last than fig-leaves were at first. (5.) The destruction of them; it will be an utter destruction (Luke 19:27); they shall be swallowed up and devoured, Psalms 21:9; Psalms 21:9. Hell, the portion of all Christ's enemies, is the complete misery both of body and soul. Their fruit and their seed shall be destroyed,Psalms 21:10; Psalms 21:10. The enemies of God's kingdom, in every age, shall fall under the same doom, and the whole generation of them will at last be rooted out, and all opposing rule, principality, and power, shall be put down. The arrows of God's wrath shall confound them and put them to flight, being levelled at the face of them, Psalms 21:12; Psalms 21:12. That will be the lot of daring enemies that face God. The fire of God's wrath will consume them (Psalms 21:9; Psalms 21:9); they shall not only be cast into a furnace of fire (Matthew 13:42), but he shall make them themselves as a fiery oven or furnace; they shall be their own tormentors; the reflections and terrors of their own consciences will be their hell. Those that might have had Christ to rule and save them, but rejected him and fought against him, shall find that even the remembrance of that will be enough to make them, to eternity, a fiery oven to themselves: it is the worm that dies not.

      III. In this confidence they beg of God that he would still appear for his anointed (Psalms 21:13; Psalms 21:13), that he would act for him in his own strength, by the immediate operations of his power as Lord of hosts and Father of spirits, making little use of means and instruments. And, 1. Hereby he would exalt himself and glorify his own name. "We have but little strength, and are not so active for thee as we should be, which is our shame; Lord, take the work into thy own hands, do it, without us, and it will be thy glory." 2. Hereupon they would exalt him: "So will we sing, and praise thy power, the more triumphantly." The less God has of our service when a deliverance is in the working the more he must have of our praises when it is wrought without us.