(8) Perfect that which concerneth me.--Or, as in the analogous phrase (Psalm 57:2), will complete for me--i.e., either "all my undertakings," or, as in Philippians 1:6, "what he has begun in and for me."

Forsake not.--Better, the works of Thine hands; do not leave them unfinished. (See for the same verb Nehemiah 6:3; Proverbs 4:13 : "let her not go.")

The special intention of the prayer depends on the origin of the psalm. If it arose out of the troubles of rebuilding Jerusalem and reconstituting the state, it is intelligible and expressive. Or the reference may be to all Jehovah's gracious intentions for Israel.

Verse 8. - The Lord will perfect that which concerneth me; i.e. will complete what he has begun for me - will not leave his work unfinished (comp. Psalm 57:2; Philippians 1:6). Thy mercy, O Lord, endureth forever. Does not suddenly break off and stop. Forsake not the works of thine own hands. This is probably more than a mere personal request. David sees in God's care for himself a portion of his great providential scheme for the redemption of the world.

138:6-8 Though the Lord is high, yet he has respect to every lowly, humbled sinner; but the proud and unbelieving will be banished far from his blissful presence. Divine consolations have enough in them to revive us, even when we walk in the midst of troubles. And God will save his own people that they may be revived by the Holy Spirit, the Giver of life and holiness. If we give to God the glory of his mercy, we may take to ourselves the comfort. This confidence will not do away, but quicken prayer. Whatever good there is in us, it is God works in us both to will and to do. The Lord will perfect the salvation of every true believer, and he will never forsake those whom he has created anew in Christ Jesus unto good works.The Lord will perfect that which concerneth me,.... Or "will", or "may the Lord perform for me" (x): all things in providence; all that he had appointed for him, that would be for his good and his own glory, Psalm 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 Philippians 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. 1 Thessalonians 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 (y) signifies, until he has accomplished it, 2 Thessalonians 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" (z); 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, Isaiah 45:11; and whom he will never leave nor forsake; for they are his church, his chosen, his children, his portion and inheritance, Psalm 94:14.

(x) "perficiet pro me", Montanus, Musculus; "perficiat pro me", Junius & Tremellius. (y) "ne dimittas", Pagninus, Montanus. (z) "Non deseres", Musculus, Piscator.