John Gills Exposition of the Bible Commentary - Psalms 139:23
Search me, O God, and know my heart ,.... He had searched him, and knew his heart thoroughly; try me, and know my thoughts ; he had tried him, and knew every thought in him, Psalm 139:1 . This therefore is not said for the sake of God; who, though he is the trier of hearts, and the searcher of the reins, is indeed a discerner of the thoughts and intents of the heart at once, and knows immediately what is in man; and needs no testimony of him, nor to make use of any means in order 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