the world > action or operation > behaviour > reciprocal treatment or return of an action > [noun] > requital or repayment > one who (5)
A person who repays or makes return for an action, a kindness, an injury, etc. In later use frequently applied to God.
A person who makes repayment; esp. one who repays a loan or debt. Also figurative.
A provider of retribution (in various senses); esp. a person or god who exacts retributive justice.