Strong G2511 καθαρίζω katharizō · to clean

1 John

1. 1 John 1:7
   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.
2. 1 John 1:9
   If we confess our sins, he is faithful and just to forgive us our sins, and to cleanse us from all unrighteousness.