Word origins: cleanse

1 John 1:8-9. NASB 95

8 If we say that we have no sin, we are deceiving ourselves and the truth is not in us.
9 If we confess our sins, He is faithful and righteous to forgive us our sins and to cleanse us from all unrighteousness.

The word translated from the Greek as “cleanse” is related to a word translated elsewhere as “prune.” He wants to cut off the sin from my life.