The Lord will perfect [that which] concerneth me,.... Or "will", or "may the Lord perform for me" : all things in providence; all that he had appointed for him, that would be for his good and his own glory, Ps 57:2; and particularly what concerned him as a king.
He had made him king over the house of Judah; he had begun to fulfil his promise concerning the kingdom; and he would perfect it, by setting him over all the tribes of Israel. Also he believed he would perfect what concerned him as a saint, even the good work of grace upon his heart; which is but a begun work, is imperfect, is gradually carried on, and will be completed; God is able to do it, and none can hinder him; he has promised to do it, and he is faithful who will do it; and his glory is concerned in it; and it may be depended on it will be finished; he is a rock, and his work is perfect; see Php 1:6;thy mercy, O Lord, [endureth] for ever; a phrase often used by the psalmist, with which his heart was affected; and here used, both as an argument by which he concluded God would perfect his begun work, and as an encouragement to make the following request:forsake not the works of thine own hands; as are all the works of providence and grace: the work of grace upon the heart may be expressed in the plural number, because of the several branches of it; which are all so many works, as the work of faith, labour, of love, &c.
1Th 1:3; and which is the Lord's handiwork; and a curious work it is, a new creation work, a work of almighty power; and which he will never cease from, or be remiss in, as the word signifies, until he has accomplished it, 2Th 1:11.
It is a prayer of faith, and may be most confidently believed: and some indeed render it as an expression of faith, "thou wilt not forsake the works of thine hands" ; David himself was the work of God's hands, as Kimchi observes, as a creature, as a king, and as a saint; and so are all the people of God, Isa 45:11; and whom he will never leave nor forsake; for they are his church, his chosen, his children, his portion and inheritance, Ps 94:14.
ydeb rmgy "perficiet pro me", Montanus, Musculus; "perficiat pro me", Junius & Tremellius. Prt la "ne dimittas", Pagninus, Montanus. "Non deseres", Musculus, Piscator.