John Gills Exposition of the Bible Commentary - Psalms 139:18
If I should count them, they are more in number than the sand ,...., That is, if I should attempt to do it, it would be as vain and fruitless as to attempt to count the sands upon the seashore, which are innumerable; Psalm 11:5 . So Pindar says F19 Olymp. Ode 2. in fine. , that sand flies number, that is, is not to be numbered; though the Pythian oracle boastingly said F20 Apud Herodot. Clio, sive l. 1. c. 47. , I know the number of the sand, and the measures of the sea; to... read more
Matthew Henry's Complete Commentary - Psalms 139:17-24
Here the psalmist makes application of the doctrine of God's omniscience, divers ways. I. He acknowledges, with wonder and thankfulness, the care God had taken of him all his days, Ps. 139:17, 18. God, who knew him, thought of him, and his thoughts towards him were thoughts of love, thought of good, and not of evil, Jer. 29:11. God's omniscience, which might justly have watched over us to do us hurt, has been employed for us, and has watched over us to do us good, Jer. 31:28. God's counsels... read more