Redemptive suffering

Redemptive suffering is the Roman Catholic belief that human suffering, when accepted and offered up in union with the Passion of Jesus, can remit the just punishment for one's sins or for the sins of another. Like an indulgence, redemptive suffering does not gain the individual forgiveness for their sin; forgiveness results from God’s grace, freely given through Christ, which cannot be earned. After one's sins are forgiven, the individual's suffering can reduce the penalty due for sin.