The problem is people wants Grace, but they still wants to cling to their evli ways/evil inclination. The main purpose of Baptism is to bury our evil ways/evil inclination, and raised up from the water in the Newness of life. Grace only comes when we have turn our hearts to God.to walk in His ways, through repentace not to walk in the stubbornness of our evil heart.
Grace is God's illuminating our soul, when God looks inside our heart and He sees that, the evil ways was all cleared from our heart, and His Grace/forgiveness is a way of God telling human 'welcome back' to me.
Therefore the main main purpose of Grace/God overlooking our sins is to bring us in Newness of life towards Him, not in the old Nature.