You can't separate God's abundant mercy from Repentance. Repentance means consenting to be changed. Psalm 51 is a prayer of King David of repentance, for restoration. He acknowledges his sin, asks for restoration, and appeals to God's character. And he looks forward to Easter-even if he doesn't understand it yet-because what Jesus does on the cross is the best example of God's abundant mercy to us.

https://stjohnsrichmond.ca/wp-content/uploads/2016/03/SE2009Mar29-2.mp3