In this Psalm David gives to the world his experience as a sinner.
I. He tells us of the blessedness of forgiveness. He is blessed (1) because his sins are taken away; (2) because his sins are covered or hidden, and that from God, not from men; (3) because he is treated as innocent.
II. He tells us of the result of his attempts to cover his sin. (1) His body suffered from the terrors of remorse. (2) The old freshness of his heart was gone, like a running stream dried up in the sickening heat of the Eastern sun.
III. He tells us of the remedy which he found. It was confession. (1) True confession implies your viewing the fact of your sin in the same light in which God views it. (2) Confession implies renunciation.
IV. How does the remedy work in David's case? He sums up the result in a single sentence: "Thou forgavest the iniquity of my sin."
V. The legitimate result of every such experience is to make its subject a teacher. "I will instruct thee and teach thee in the way which thou shalt go" this way of repentance and confession in which I have walked.
M. R. Vincent, Gates into the Psalm Country,p. 109.
Reference: Psalms 32 M. G. Pearse, Some Aspects of the Blessed Life,p. 34.