O love the Lord, all ye his saints - This is the "application" of all the truths suggested in the psalm. The experience of the psalmist had shown the wisdom of trusting in God in times of danger and trouble, and had laid the foundation for a proper exhortation to others to imitate his example; an argument why all the people of God should love him, and should be of good courage. The reason here assigned for their loving the Lord is, that he preserves those who are faithful to him, and "rewards the proud doer." This is a reason for loving God, or for putting our trust in him, though the psalmist does not say that this is the only reason for doing it. The meaning here is, that the dealings of God toward the psalmist had established this truth in regard to the character of God, that he does preserve the faithful, and does punish the proud, and that this fact constitutes a reason why all his people should confide in him.

For the Lord preserveth the faithful - The faithful; those who put their trust in him; those who do not give up in despondency and despair in time of danger and trouble; those who do not forsake him even though for a time he seems to forsake them. What God looks for mainly in his people is confidence; faithfulness; trust; fidelity.

And plentifully rewardeth - "Abundantly" rewards. Literally, "in plenty." That is, his punishment does not fall short of the desert of the wicked man. It is ample or full. He does full justice.

The proud doer - "The man working pride." The reference is to the man who is confident in himself; who seeks to aggrandize himself, and who in doing this is regardless of the rights of others.

O love the Lord, all ye his saints - It is only the saints that can love God, as they only are made partakers of the Divine nature. Holy spirits can love God, who is the fountain of their holiness; and the saints should love him.

Preserveth the faithful - Those who, being filled with the love of God, bring forth the fruits of that love - universal obedience to the will of God; for to such persons his commands are not grievous, their duty is their delight; while a man is faithful to the grace he has received, that is, uses and improves the talents with which God has intrusted him, God's service is perfect freedom.

The proud doer - The man of the proud heart, haughty and supercilious carriage, and insulting and outrageous conduct. A proud man is peculiarly odious in the sight of God; and in the sight of reason how absurd! A sinner, a fallen spirit, an heir of wretchedness and corruption-proud!

Proud of what? Of an indwelling devil! Well; such persons shall be plentifully rewarded. They shall get their due, their whole due, and nothing but their due.

O love the Lord, all ye his saints,.... To whom his goodness extends; who are favoured with the blessings of his grace, as pardon, peace, and righteousness; and who particularly are sanctified by his Spirit, and have principles of grace and holiness wrought in their hearts: these, even all of them, are called upon to love the Lord, having that grace implanted in their souls; that is, to express it, not by words, but by deeds, under a sense of the love and kindness of God to them; and to join with the psalmist in an affectionate reverence of him, trust in him, and thankfulness to him, on account of his marvellous kindness showed him;

for the Lord preserveth the faithful; such as trust in him, believe in Christ, and are faithful to his word and ordinances, abide by them, and stays near his people; these he not only preserves in a providential way, but he preserves them in a way of special grace; he keeps them "from evil", as the Targum; from the evil of sin; from a total and final falling away by it; from the evil of the world, so as not to be drawn off from Christ and his ways, either by its frowns or flatteries; and from the evil one, Satan, from being destroyed by him and his temptations; and these are preserved safe to the kingdom and glory of Christ, by the mighty power of God: some render the words, "the Lord keepeth faithfulness" (i); he will never suffer his own faithfulness to fail; he is a covenant keeping God, and is always true to his word and promise;

and plentifully rewardeth the proud doer; such as all self-righteous persons are, and all that speak grievous things proudly and contemptuously against the truly righteous, Psalm 31:18; who bear hard upon them, and oppress them; and such as antichrist and his party, who exalts himself above all that is called God; but in what those deal proudly, God is above them, an more than a match for them, and he sets himself against them; he resists them, and will reward them according to their works.

(i) "fidelitatem", Gejerus; or "fidelitles", Ainsworth.

23 O love the Lord, all ye his saints: for the Lord preserveth the faithful, and plentifully rewardeth the proud doer.

24 Be of good courage, and he shall strengthen your heart, all ye that hope in the Lord.

Psalm 31:23

"O love the Lord, all ye his saints." A most affecting exhortation, showing clearly the deep love of the writer to his God: there is the more beauty in the expression, because it reveals love towards a smiting God, love which many waters could not quench. To bless him who gives is easy, but to cling to him who takes away is a work of grace. All the saints are benefited by the sanctified miseries of one, if they are led by earnest exhortations to love their Lord the better. If saints do not love the Lord, who will? Love is the universal debt of all the saved family: who would wish to be exonerated from its payment? Reasons for love are given, for believing love is not blind. "For the Lord preserveth the faithful." They have to bide their time, but the recompense comes at last, and meanwhile all the cruel malice of their enemies cannot destroy them. "And plentifully rewardeth the proud doer." This also is cause for gratitude: pride is so detestable in its acts that he who shall mete out to it its righteous due, deserves the love of all holy minds.

Psalm 31:24

"Be of good courage." Keep up your spirit, let no craven thoughts blanch your cheek. Fear weakens, courage strengthens. Victory waits upon the banners of the brave. "And he shall strengthen your heart." Power from on high shall be given in the most effectual manner by administering force to the fountain of vitality. So far from leaving us, the Lord will draw very near to us in our adversity, and put his own power into us. "All ye that hope in the Lord." Every one of you, lift up your heads and sing for joy of heart. God is faithful, and does not fail even his little children who do but hope, wherefore then should we be afraid?

O love the LORD, all ye his saints: for the LORD preserveth the faithful, and plentifully rewardeth the proud doer.

23, 24. the Lord . proud doer-literally, "the Lord is keeping faith," that is, with His people, and is repaying, &c. Then let none despair, but take courage; their hopes shall not be in vain.

31:19-24 Instead of yielding to impatience or despondency under our troubles, we should turn our thoughts to the goodness of the Lord towards those who fear and trust in Him. All comes to sinners through the wondrous gift of the only-begotten Son of God, to be the atonement for their sins. Let not any yield to unbelief, or think, under discouraging circumstances, that they are cut off from before the eyes of the Lord, and left to the pride of men. Lord, pardon our complaints and fears; increase our faith, patience, love, and gratitude; teach us to rejoice in tribulation and in hope. The deliverance of Christ, with the destruction of his enemies, ought to strengthen and comfort the hearts of believers under all their afflictions here below, that having suffered courageously with their Master, they may triumphantly enter into his joy and glory.