For I will declare mine iniquity; I will be sorry for my sin. Psalm 38:18.
Charles Spurgeon, The Treasury of David.
"To be sorry for sin is no atonement for it, but it is the right spirit in which to repair to Jesus, who is the reconciliation and the Saviour. A man is near to the end of his trouble when he comes to an end with his sins."
Matthew Henry's Commentary
Note, If we be truly penitent for sin, that will make us patient under affliction, and particularly under unjust censures. Two things are required in repentance: -
(1.) Confession of sin: "I will declare my iniquity; I will not only in general own myself a sinner, but I will make a particular acknowledgment of what I have done amiss." We must declare our sins before God freely and fully, and with their aggravating circumstances, that we may give glory to God and take shame to ourselves.
(2.) Contrition for sin: I will be sorry for it. Sin will have sorrow; every true penitent grieves for the dishonour he has done to God and the wrong he has done to himself. "I will be in care or fear about my sin" (so some), "in fear lest it ruin me and in care to get it pardoned."
Meyers, R. (2006). e-Sword. The sword of the Lord with an electronic edge (Verson 7.8) [Computer software].