15 As for man, his days are like grass.
As a flower of the field, so he flourishes. 16 For the wind passes over it, and it is gone.
Its place remembers it no more. 17 But Yahweh’s loving kindness is from everlasting to everlasting with those who fear him,
his righteousness to children’s children; 18 to those who keep his covenant,
to those who remember to obey his precepts.

Matthew Henry's Commentary on Psalm 103:15-18

Commentary on Psalm 103:15-18

(Read Psalm 103:15-18)

How short is man's life, and uncertain! The flower of the garden is commonly more choice, and will last the longer, for being sheltered by the garden-wall, and the gardener's care; but the flower of the field, to which life is here compared, is not only withering in itself, but exposed to the cold blasts, and liable to be cropt and trod on by the beasts of the field. Such is man. God considers this, and pities him; let him consider it himself. God's mercy is better than life, for it will outlive it. His righteousness, the truth of his promise, shall be unto children's children, who tread in the footsteps of their forefathers' piety. Then shall mercy be preserved to them.