I will arise and go to my father, and will say unto him, Father, I have sinned against heaven, and before thee, and am no more worthy to be called thy son.
If we say that we have no sin, we deceive ourselves, and the truth is not in us: but if we confess our sins, he is faithful and just to forgive us our sins, and to cleanse us from all unrighteousness.
1 John 1.8,9
Dearly beloved brethren, the Scripture moveth us in sundry places to acknowledge and confess our manifold sins and wickedness; and that we should not dissemble nor cloak them before the face of almighty God our heavenly Father; but confess them with an humble, lowly, penitent and obedient heart; to the end that we may obtain forgiveness of the same by his infinite goodness and mercy.
— From The Order for Evening Prayer, BCP, 1662