This is similar to the rich man whose only reason for coming to God was out of self-righteousness. You notice what Cain did just after he had been told to try a little harder. You notice that God did not say this to Abel. In fact, God only reminded Israel about the terms of the covenant because there were people who were part of the Old Testament church who were holding idols not as a matter of falling into temptation but in a self-righteous way. The natural reaction for a believer when he hears the terms of the covenant are like David proclaimed here.Here David hears the law and then his reaction is I am undone. And then his desire is not a self righteous attitude that he will try a little harder, no, may it never be it was that David could not even deal with the sin or get forgiveness by his own effort. For the sake of your name!!! Here is the context. David is overwhelmed when he hears the law, realizing how far he falls short of God's standards. He knows that he can't overcome his sin on his own, and pleads with God to act for the sake of His own reputation.The price of full redemption was paid by Christ, who offers us forgiveness with no requirements on our part. In acknowledging His righteousness, we are living a life of repentance, hopeful in His unfailing love. We not only acknowledge that we have done wrong, but we also acknowledge that we cannot atone for our wrongdoings. Grace is living with the reality that the name of the Lord is His method of perseverance for us, and that He is pursuing us with forgiveness for His own name's sake, even though our name is the guilty party. Christ's willingness to forgive us without any requirements on our part shows His great love and mercy. We are called to live a life of repentance, acknowledging our need for His forgiveness. If we focus on developing a relationship with God, we will be able to better teach our consciences to follow His ways. This will not only give us confidence, but will also keep us from being tempted to find comfort in man-made religion.There is a common belief that the message of law and grace is the same for all Christians, but I do not think that the scriptures support this view. The scriptures actually teach that confidence in God is built by what He does for His own people, which is to teach them not to focus on the law. This is why the terms "law" and "grace" are always used in relation to the reprobate and the remnant respectively. The reminder that God's forgiveness is by grace and not by law is always directed toward the latter group.It is interesting that you focus on the contrast between the believer's reaction to sorrow and the necessity of that reaction. This gets into the believer's mindset and I find it sorrowful that I need to do this. However, this is a good example of Calvinism. We have not even scratched the surface of this topic in this day of pragmatism. This is bringing down the walls.The fact that wicked men are constantly trying to undermine forgiveness demonstrates how difficult it is to achieve. I would argue that it is the jewel of God's chosen people. We know how passionate God is about forgiveness by His design to forgive even the worst offenses. It is not that we must rely on God's general level of forgiveness; instead, we should focus on man's responses to God. This is because men are looking at the shadows. It is a common misconception that God requires a certain amount of resistance to temptation in order to be satisfied with the level of repentance. However, this is not the case; God is not concerned with meeting our human standards of acceptability. Rather, God separates Himself from the religion of men and speaks with His own authority in order to provide sinners with confidence and personal peace.God's forgiveness is exclusive and definite. He defines forgiveness as something that only He can give. He says that you must rely on His ability in order to see that He requires nothing from you in order to gain His acceptance. Forgiveness is not something that can be found on Earth, it is something that is much greater. When you look at the expanse of the heavens, you can see how vast they are. God is in heaven and His work of redemption is throughout all generations.Men are like grass in that they grow for a very short time and then they die. However, God is from all eternity and His name is above every name. He forgives us in His eternal love. When we learn of God's forgiveness we find it to be a well spring of eternal power to bring about the state of peace in our hearts apart from any thing we believe about our acceptance as an ability to find forgiveness by our own view of what God is like.Although we may not be able to comprehend fully how God's grace works, we know that He is willing to forgive us. This is the beauty of trusting in Him instead of trying to meet the requirements of the law on our own--He can bring us to a place of confidence that we would never be able to achieve by ourselves. We are joyful because of this!