Forgive sins (7)
I believe the answer is:
absolve
'forgive sins' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for absolve that I've seen before include "Exonerate" , "Grant remission of a sin" , "Acquit - free of blame" , "Excuse" , "Declare (someone) free of guilt" .)