You try to shut out the conscience when it tells you that you are guilty and deserve to face judgment and punishment. Even if you do not believe in God, this invisible written law of God exists in every human heart: there is a God and a judgment day. We are, in a sense, 'prisoners of our own souls'. We are aware of all the best efforts we take to be good and moral, yet fail miserably. Our secret sins haunt us about a God to whom we are accountable. The sin nature with which we are born makes us slaves to sin and we are never free from its tyranny. We sin because we are sinners. We try to do...