This very beautiful psalm is entitled “A Psalm of David.” Nothing in the psalm forbids the supposition that he was its author, although nothing in the psalm or elsewhere enables us to ascertain the precise occasion on which it was written.
It seems to have been composed after some signal manifestation of the mercy of God, or some striking proof of his compassion and loving-kindness; after some danger which threatened life, and was regarded as evidence of the divine displeasure, but had now passed by; after God had interposed, and checked and arrested judgments which threatened ruin, and had manifested himself again as a loving Father. This merciful interposition filled the heart of the psalmist with emotions of gratitude and praise, and led him to call on his own soul Psalms 103:1-2, and all the angels Psalms 103:20, and the hosts of heaven Psalms 103:21, and all the works of God everywhere Psalms 103:22 to unite in celebrating his praise. The psalm is exceedingly regular in its structure and composition; beautiful in its language and conceptions; adapted to all times and ages; suited to express the feelings of gratitude to God for deliverance from trouble, and for the manifestation of his mercy; suited to elevate the soul, and to fill it with cheerful views. These circumstances have made it a favorite psalm as a vehicle of praise in all ages. It is, moreover, eminently suited to express the feelings of the soul in view of the redeeming love and mercy of God; the goodness of God in the forgiveness of sin through a Saviour; and his tender compassion for his people as a Father; and it is, therefore, one to which the Christian oftener turns than to almost any other of the psalms as expressive of the deep and grateful feelings of his heart.