sin offering

Definition

A sin offering is a sacrifice made to grant forgiveness from sin.

Hebrews 9:22 says that in order for there to be a cleansing from sin, blood must be shed to pay the cost for the sin that was committed.
In the Old Testament, animals were sacrificed as a sin offering but these sacrifices had to be done repeatedly and could not permanently bring about forgiveness of sin.
In the New Testament, Jesus became the perfect sin offering. His death on the cross paid the penalty for sin, for all time.