Confession is an act of mortification; it is, as it were, the vomit of the soul. It breeds a dislike of the sweetest morsels when they are cast up in loathsome ejections. Sin is sweet in commission, but bitter in the remembrance. God's children find that their hatred is never more keen and exasperated against sin than in confessing. Exposition James
We make our confession to GOD privately, when we disburden our hearts before God, open the secrets of our hearts to him alone, and, in acknowledging the sins that are in us, we earnestly beseech him to have mercy upon us. This confession is necessary to obtain pardon for our sins. The Decades, https://www.monergism.com/decades-ebook