Prov 21:21

“See here, 1. What it is to make religion our business; it is to follow after righteousness and mercy, not to content ourselves with easy performances, but to do our duty with the utmost care and pains, as those that are pressing forward and in fear of coming short. We must both do justly and love mercy, and must proceed and persevere therein; and, though we cannot attain to perfection, yet it will be a comfort to us if we aim at it and follow after it. 2. What will be the advantage of doing so: Those that do follow after righteousness shall find righteousness; God will give them grace to do good, and they shall have the pleasure and comfort of doing it; those that make conscience of being just to others shall have the pleasure and comfort of doing it; those that make conscience of being just to others shall be justly dealt with by others and others shall be kind to them. The Jews followed after righteousness, and did not find it, because they sought amiss, Rom 9:31. Otherwise, Seek and you shall find, and with it shall find both life and honour, everlasting life and honour, the crown of righteousness.”

“He that followeth after righteousness and mercy,.... Is eager, diligent, and fervent in his pursuit of these things: "after righteousness"; not a legal righteousness, such as the Jews followed after, but did not attain to; because they sought it not by faith, but as it were by the works of the law, Rom 9:31; by which there is no righteousness or justification before God; but an evangelical righteousness, the righteousness of Christ; see Isa 51:1. To follow after it is to seek, desire, and thirst after it, Mat 5:6; which supposes a want of righteousness, a sense of that want; a view of a righteousness without them, even in Christ; a love and liking of it, and therefore follow after it; it being pure, perfect, agreeably to the law and justice of God, which justifies now, and will answer for them in a time to come. And such follow after "mercy" or "grace" (g); seeing themselves miserable by sin, and having no merit of their own, apply to God for pardoning grace and mercy; and seek for righteousness in a way of grace, as a free gift; and for the whole of salvation in the same way, as well as for all grace and fresh supplies of it: it may be understood, in consequence of the former, of a diligent and eager performance of works of righteousness and mercy, and an earnest desire after both. And such a man findeth life, righteousness, and honour; which is more than he is said to follow after: "life" spiritual, which he has from Christ by his Spirit, and which is owing to the grace and mercy of God; and eternal life, through the righteousness of Christ, in whom it is only to be found, and from whom all the blessings of life come; who has it in his hands to give, and does give it to all his people: "righteousness" also he finds, not in himself, nor by the works of the law, but in Christ; being directed to him by the Spirit and word of God; and an excellent finding this is; a robe of righteousness, which he lays hold upon, puts on, and rejoices in: and likewise "honour", through relation to God and Christ; through grace received from them; by enjoying the presence of them, and being made a king and priest to God; and hereafter will be placed at Christ's right hand, inherit the kingdom of glory, sit on the same throne with Christ, and wear the crown of life and righteousness. (g) "gratiam", Cocceius.”

“21 He that followeth after righteousness and kindness Will obtain life, righteousness, and honour. How we are to render צדקה וחסד is seen from the connection of Pro 21:3 and Hos 6:7 : tsedakah is conduct proceeding from the principle of self-denying and compassionate love, which is the essence of the law, Mic 6:8; and hesed is conduct proceeding from sympathy, which, placing itself in the room of another, perceives what will benefit him, and sets about doing it (cf. e.g., Job 6:14 : to him who is inwardly melted disheartened חסד is due from his neighbour). The reward which one who strives thus to act obtains, is designated 21b by חיּים and כּבוד. Honour and life stand together, Pro 22:4, when עשׁר precedes, and here צדקה stands between, which, Pro 8:18, Psa 24:5, is thought of as that which is distributed as a gift of heaven, Isa 45:8, which has glory in its train, Isa 58:8; as Paul also says, "Whom He justified, them He also glorified." The lxx has omitted tsedakah, because it can easily appear as erroneously repeated from 21a. But in reality there are three good things which are promised to those who are zealous in the works of love: a prosperous life, enduring righteousness, true honour. Life as it proceeds from God, the Living One, righteousness as it avails the righteous and those doing righteously before God, honour or glory (Psa 29:3) as it is given (Psa 84:12) by the God of glory. Cf. with חיים צדקה, Pro 10:2, and with צדקה, especially Jam 2:13, κατακαυχᾶται ἔλεος κρίσεως.”