(1-4) Comp. Psalm 115:9-13, where a similar choral arrangement is found.

Verse 1. - O give thanks unto the Lord; for he is good because his mercy endureth for ever (comp. Psalm 106:1, and the comment ad loc.).

118:1-18 The account the psalmist here gives of his troubles is very applicable to Christ: many hated him without a cause; nay, the Lord himself chastened him sorely, bruised him, and put him to grief, that by his stripes we might be healed. God is sometimes the strength of his people, when he is not their song; they have spiritual supports, though they want spiritual delights. Whether the believer traces back his comfort to the everlasting goodness and mercy of God, or whether he looks forward to the blessing secured to him, he will find abundant cause for joy and praise. Every answer to our prayers is an evidence that the Lord is on our side; and then we need not fear what man can do unto us; we should conscientiously do our duty to all, and trust in him alone to accept and bless us. Let us seek to live to declare the works of God, and to encourage others to serve him and trust in him. Such were the triumphs of the Son of David, in the assurance that the good pleasure of the Lord should prosper in his hand.O give thanks unto the Lord,.... For all his mercies, temporal and spiritual; as all should, who are partakers of them: this should be done always, and for all things, in the name of Christ; it is but reasonable service;

for he is good; in himself, and to others: is essentially and diffusively good; the fountain of all goodness, and the author of all good things;

because his mercy endureth for ever; in his own heart, and in his covenant; his grace and lovingkindness displayed in Christ; the blessings and promises of it, which are the sure mercies of David: these always remain, notwithstanding the unworthiness of his people; and though he hides his face sometimes from them, and chastises them; see Psalm 106:1; the goodness and mercy of God were seen in setting David on the throne; and abundantly more in giving Christ to be the Saviour of his people; for both which thanks should be given, and the kindness acknowledged, by the persons mentioned in the following verses.