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

Create in me a clean heart, O God, and renew a right spirit within me. - Psalm 51:10

Four verses to conquer shame

Finally, brothers and sisters, whatever is true, whatever is noble, whatever is right, whatever is pure, whatever is lovely, whatever is admirable—if anything is excellent or praiseworthy—think about such things. - Philippians 4:8