Isaiah 64:6
But we are all as an unclean [thing], and all our righteousnesses [are] as filthy rags; and we all do fade as a leaf; and our iniquities, like the wind, have taken us away.

James 5:15-16
And the prayer of faith shall save the sick, and the Lord shall raise him up; and if he have committed sins, they shall be forgiven him. Confess [your] faults one to another, and pray one for another, that ye may be healed. The effectual fervent prayer of a righteous man availeth much.

Job 7:20
I have sinned; what shall I do unto thee, O thou preserver of men? why hast thou set me as a mark against thee, so that I am a burden to myself?

Job 40:4
Behold, I am vile; what shall I answer thee? I will lay mine hand upon my mouth.

I John 1:8-9
If we say that we have no sin, we deceive ourselves, and the truth is not in us. If we confess our sins, he is faithful and just to forgive us [our] sins, and to cleanse us from all unrighteousness.

Leviticus 5:5
And it shall be, when he shall be guilty in one of these [things], that he shall confess that he hath sinned in that [thing].

Mark 1:5
And there went out unto him all the land of Judaea, and they of Jerusalem, and were all baptized of him in the river of Jordan, confessing their sins.

Matthew 3:6
And were baptized of him in Jordan, confessing their sins.

Proverbs 28:13
He that covereth his sins shall not prosper: but whoso confesseth and forsaketh [them] shall have mercy.

Psalm 32:1-8
[A Psalm] of David, Maschil.
Blessed [is he whose] transgression [is] forgiven, [whose] sin [is] covered. Blessed [is] the man unto whom the LORD imputeth not iniquity, and in whose spirit [there is] no guile. When I kept silence, my bones waxed old through my roaring all the day long. For day and night thy hand was heavy upon me: my moisture is turned into the drought of summer. Selah. I acknowledged my sin unto thee, and mine iniquity have I not hid. I said, I will confess my transgressions unto the LORD; and thou forgavest the iniquity of my sin. Selah. For this shall every one that is godly pray unto thee in a time when thou mayest be found: surely in the floods of great waters they shall not come nigh unto him. Thou [art] my hiding place; thou shalt preserve me from trouble; thou shalt compass me about with songs of deliverance. Selah. I will instruct thee and teach thee in the way which thou shalt go: I will guide thee with mine eye. I said, LORD, be merciful unto me: heal my soul; for I have sinned against thee.

Psalms 51:1-2
(To the chief Musician, A Psalm of David, when Nathan the prophet came unto him, after he had gone in to Bath-sheba.)
Have mercy upon me, O God, according to thy lovingkindness: according unto the multitude of thy tender mercies blot out my transgressions. Wash me throughly from mine iniquity, and cleanse me from my sin.

Psalms 69:5-6
O God, thou knowest my foolishness; and my sins are not hid from thee. Let not them that wait on thee, O Lord GOD of hosts, be ashamed for my sake: let not those that seek thee be confounded for my sake, O God of Israel.