Let's suppose I had two gifts to give to you, door #1 and door #2. And you chose only one, door #1. Behind door #1 was $100,000. You got all excited and thought, "THIS IS GLORIOUS!" You went out and bought a new car and made a down payment on a house. You thought that you had arrived. But you didn't have enough money coming in and over the years the car started needing work which you could not afford. That house you so loved started having things needed like a new roof and a paint job which you could not get done because you couldn't afford it. Pretty soon that new car and new house looked run down and it was no longer glorious. This represents the Law. It looked good at first and it still meant that God was involved in the process. However there is never enough time or money to maintain the law in our lives. We cannot keep up the law.
So you came back and said, "thank you for door #1, but what CAN I DO to get door #2. I responded "oh, it has always been free. You CAN'T DO ANYTHING but ask for it and receive it." So you ask and I open door #2 and there is $10,000,000,000 (10 Billion dollars) behind it. You once thought that the 100,000 dollars was glorious. How much more glory will be on the 10 Billion dollars? You can go into any store and get whatever you ask for because of the unlimited supply you have been given. Now let's go back and apply that to God's grace over God's Law. God's Law is perfect and God's Law if good and sweeter than the honey comb. Let's don't throw out the Law and bash the Law. It was glorious. However, the Law ($100,000) as glorious as it was, could not do for me what God's grace (10 Billion dollars) could do for me. For God's Grace is MUCH MORE glorious.
2Co 3:7-11 ESV Now if the ministry of death, carved in letters on stone, came with such glory that the Israelites could not gaze at Moses' face because of its glory, which was being brought to an end, (8) will not the ministry of the Spirit have EVEN MORE glory? (9) For if there was glory in the ministry of condemnation, the ministry of righteousness must far exceed it in glory. (10) Indeed, in this case, what once had glory has come to have no glory at all, because of the glory that surpasses it. (11) For if what was being brought to an end came with glory, MUCH MORE will what is permanent have glory.