If we confess our sins, he is faithful and just to forgive us our sins and purify us from all unrighteousness. 1 John 1:9

If l regard iniquity in my heart. The Lord will not hear.  But certainly God has heard me. He has attended to the voice of my prayer. Psalms 66:18-19

He who covers his sins will not prosper. But whoever confesses and forsakes them will have mercy. Proverbs 28:13

I acknowledged my sin to you, and my iniquity I have not hidden. I said, “ I will confess my transgressions to the Lord,” and you forgave me the iniquity of my sin. Psalms 32:5

Confess your trespasses to one another, and pray for one another, that you may be healed. James 5:16

When a man or a woman commits any sin that men commit in unfaithfulness against the Lord, and that person is guilty, then he shall confess the sin he has committed. Numbers 5:6-7