Deuteronomy 5 Then Moses summoned all Israel and said to them: "Hear, O Israel, the statutes and the ordinances which I am speaking today in your hearing, that you may learn them and observe them carefully. "The LORD our God made a covenant with us at Horeb. The LORD did not make this covenant with our fathers, but with us, with all those of us alive here today. The LORD spoke to you face to face at the mountain from the midst of the fire, while I was standing between the LORD and you at that time, to declare to you the word of the LORD; for you were afraid because of the fire and did not go up the mountain. He said, 'I am the LORD your God who brought you out of the land of Egypt, out of the house of slavery. You shall have no other gods before Me. You shall not make for yourself an idol, or any likeness of what is in heaven above or on the earth beneath or in the water under the earth....."
Yes, no one disputes the Old covenant is connected with Law and that covenant was to define sin and reveal the righteousness of God.
Is God holy? Is the law holy? Is God righteous? Is the law righteous? Is God good? is the law good? Is God just? Is the law just? Is God spiritual? Is the law spiritual? Should we delight in God? Should we delight in the Law of God? Why? Because the law reveals the righteousness of God. Romans 3:21repudiates your claims just as Romans 7:12 repudiates them. The law does indeed reveal the rightoeusness of God as the law can be summarized in one word "LOVE" and is God LOVE?
Now, is "holy" a moral value? Is "righteousness" a moral value? Is "good" a moral value? Is "just" a moral value? Is "love" a moral value? If so, then God's righteousness is a Moral righteousness and if that righteousness is a revelation of HIS HEART then his heart is a MORAL HEART.