Verse 29. - O give thanks unto the Lord, for he is good: for his mercy endureth forever. The psalm ends, as it began, with the usual thanksgiving refrain (comp. 1 Chronicles 16:34; 2 Chronicles 5:13; Ezra 3:11; Psalm 106:1; Psalm 107:1; Psalm 118:1-4; Psalm 136:1-26).

118:22,23, may refer to David's preferment; but principally to Christ. 1. His humiliation; he is the Stone which the builders refused: they would go on in their building without him. This proved the ruin of those who thus made light of him. Rejecters of Christ are rejected of God. 2. His exaltation; he is the chief Cornerstone in the foundation. He is the chief Top-stone, in whom the building is completed, who must, in all things, have the pre-eminence. Christ's name is Wonderful; and the redemption he wrought out is the most amazing of all God's wondrous works. We will rejoice and be glad in the Lord's day; not only that such a day is appointed, but in the occasion of it, Christ's becoming the Head. Sabbath days ought to be rejoicing days, then they are to us as the days of heaven. Let this Saviour be my Saviour, my Ruler. Let my soul prosper and be in health, in that peace and righteousness which his government brings. Let me have victory over the lusts that war against my soul; and let Divine grace subdue my heart. The duty which the Lord has made, brings light with it, true light. The duty this privilege calls for, is here set forth; the sacrifices we are to offer to God in gratitude for redeeming love, are ourselves; not to be slain upon the altar, but living sacrifices, to be bound to the altar; spiritual sacrifices of prayer and praise, in which our hearts must be engaged. The psalmist praises God, and calls upon all about him to give thanks to God for the glad tidings of great joy to all people, that there is a Redeemer, even Christ the Lord. In him the covenant of grace is made sure and everlasting.O give thanks unto the Lord, for he is good,.... And thus the psalm ends as it began; there having been given many instances of the divine goodness, in hearing and delivering the psalmist when in distress; saving him from his enemies, when compassed about with them; sparing his life, when in great danger; and especially in making the stone rejected by the builders the head of the corner;

for his mercy endureth for ever; the above instances are proofs of it; and still it continues, and will for evermore. Here ends the great "Hallel", or hymn, sung at the passover and other festivals.