The Doctrine of Hamartiology is the Doctrine of Sin. It is interested in the questions of the nature, extent, pollution and guilt of sin, taking up the subject from the Scriptural portrayal of sin as "a reproach to any people. It is to obtain a clear light upon sin as a hateful thing to God and a shameful thing to man. It is an. addition to God's original creation, outside the working of God, originating in the free will of man opposed to God.