Let them shout for joy, and be glad, that favour my righteous
cause
The cause of David was a righteous cause, he having done no iniquity, or anything criminal against Saul his enemy, who persecuted him; and there were some that favoured his cause, as Jonathan, Saul's son, and a few others of rank and figure; but the greatest part were mean and despicable, ( 1 Samuel 22:2 ) ; and so the cause of Christ and of his people, which is one, is a righteous cause, which no one need to be ashamed of, and is worth suffering for; though those that favour it are for the most part the poor and base and weak things of the world: but when this cause prospers they rejoice and are glad, as they do at the happiness of every particular saint; for if one member is honoured, all the rest rejoice with it;
yea, let them say continually, the Lord be magnified;
let them continually ascribe greatness, give honour and glory, to him,
which hath pleasure in the prosperity of his servant;
meaning either himself, who was a servant of the Lord, not only by creation, but by grace; and who had his times both of temporal and spiritual prosperity; which were owing to the good will and pleasure of God, and to the delight and complacency he had in him, being a man after his own heart, raised up to fulfil his will; and since this prosperity did not arise from any desert of his, he would have all the glory of it given to God: or else he intends the Messiah, his antitype, who, as Mediator, is the servant of the Lord; of his choosing, calling, and sending; whose commands he diligently and faithfully obeyed; from whom he had his work, and also his reward: his prosperity lies in the work of redemption succeeding in his hands; in his exaltation at the right hand of God; and in the spread of his Gospel in the world, and the efficacy of it to the conviction of sinners; and in the establishment and increase of his kingdom and interest; on which account the Lord's name is to be magnified and glorified, who delights in him as his servant, and in his prosperity; and the rather this is to be done, since the saints have an interest in him as a Prince and a Saviour: or anyone of the servants of the Lord may be understood; or however it is applicable to anyone of them, who, through the power of divine grace upon them, are made willing to serve the Lord with reverence and godly fear; who are his Hephzibah, in whom is all his delight and pleasure, ( Isaiah 62:4 ) ; who rejoices over them to do them good: and hence flows all the spiritual prosperity they enjoy, on account of which glory is to be given to God by them and all the saints that know it, ( Psalms 34:1 Psalms 34:2 ) .