Adam Clarke's Commentary on the Bible - Psalms 40:9
I have preached righteousness - I think it best to refer these words to Christ and his apostles. In consequence of his having become a sacrifice for sin, the Jewish sacrificial system being ended, the middle wall of partition was broken down, and the door of faith, the doctrine of justification by faith, opened to the Gentiles. Hence the Gospel was preached in all the world, and the mercy of God made known to the Gentiles; and thus righteousness - justification by faith, was preached in the... read more
John Gills Exposition of the Bible Commentary - Psalms 40:17
But I am poor and needy ,.... As Christ was literally, 2 Corinthians 8:9 ; and in a spiritual sense, when deserted by his Father, forsaken by his disciples, and surrounded by his enemies; and had the sins of his people, the curse of the law, and the wrath of God upon him; yet the Lord thinketh upon me ; thinketh good for me, as the Targum; or thinks highly of me; has me in great esteem though despised of men, and in such a suffering state; thou art my help and my deliverer ;... read more