1 John 1:9 says, "If we confess our sins, He is faithful and just to forgive us our sins, and to cleanse us from all unrighteousness," verse 7 says, "But if we walk in the light, as He is in the light, we have fellowship one with another, and the blood of Jesus Christ his Son cleanseth us from all sin."
Psalms 103:12, "As far as the east is from the west, so far hath he removed our transgressions from us." and Hebrews 8:12, " For I will be merciful to their unrighteousness, and their sins and their iniquities will I remember no more."