the Precept (Principle)
Only acknowledge thine iniquity, that thou hast transgressed against the Lord Thy God.
the Promise (from God)
1 John 1:9
If we confess our sins, He is faithful and just to forgive us our sins, and to cleanse us from all unrighteousness.
our Prayer (to God)
I acknowledge my transgressions: and my sin is ever before me. Against Thee, Thee only, have I sinned, and done this evil in Thy sight.