Psalm 50:8 I bring no charges against you concerning your sacrifices or concerning your burnt offerings, which are ever before me.
What happened in the old times when someone sacrificed an animal before God to gain forgiveness?
God forgave them for the sin and put that sin behind Him once and for all. He did not go back and revisit that sin ever again!
That is forgiveness! Taking the issue and putting it behind you no matter what happens in the future!