We trample the blood of the Son of God if we think we are forgiven because we are sorry for our sins. The only explanation for the forgiveness of God and for the unfathomable depth of His forgetting is the death of Jesus Christ. Our repentance is merely the outcome of our personal realization of the atonement which He has worked out for us. It does not matter who or what we are; there is absolute reinstatement into God by the death of Jesus Christ and by no other way, not because Jesus Christ pleads, but because He died. It is not earned, but accepted. All the pleading which deliberately refuses to recognize the Cross is of no avail; it is battering at a door other than the one that Jesus has opened. Our Lord does not pretend we are all right when we are all wrong. The atonement is a propitiation whereby God, through the death of Jesus, makes an unholy man holy.
via Sermon Illustrations.