We are slave of sin. Now sin is master of us. We must become master of sin. Sin must become slave of us. Perfect man is no meaning of who has no sin. Perfect man is meaning of who can control his sin. We are like a horseman. Horse means our desire. Horseman control a horse by rein. We have sexual impulse. We never throw away our desire like trash. We must control sexual impulse. We give in to sexual impulse, we are slave of our desire. We win to sexual impulse, we are master of our desire. We must become master against the body of ourselves by our effort seriously.