2 Kings 21:8 Neither will I make the feet of Israel move any more out of the land which I gave their fathers; only if they will observe to do according to all that I have commanded them and according to all the law that my servant Moses commanded them.
Deuteronomy 4:13, 14 And he declared unto you his covenant, which he commanded you to perform, even ten commandments; and he wrote them upon two tables of stone. And the Lord commanded me at that time to teach you statutes and judgments, that ye might do them in the land whither ye go over to possess it.
Dan 9:11 Yea, all Israel have transgressed thy law, even by departing, that they might not obey thy voice; therefore the curse is poured upon us, and the oath that is written in the law of Moses the servant of God, because we have sinned against him.
Once more we see “thy law” and “the law of Moses,” and this time the two are recognized as different in content. There are no curses recorded in the Ten Commandments that God wrote, but the law which Moses wrote contained an abundance of such curses and judgments.
The major point of difference between the law of God and the law of Moses, though, lies in the way they were recorded and preserved. We have already cited Moses’ statement that God “wrote them (the Ten Commandments) upon two tables of stone” (Deuteronomy 4:13). Compare that with Exodus 31:18, “two tables of testimony, tables of stone, written with the finger of God.”
No one can confuse this writing with the way the mosaic law was produced. “And Moses wrote this law ... And it came to pass, when Moses had made an end of writing the words of this law in a book, until they were finished, That Moses commanded the Levites, which bare the ark of the covenant of the Lord, saying, Take this book of the law, and put it in the side of the ark of the covenant of the Lord your God, that it may be there for a witness against thee” (Deuteronomy 31:9, 24-26). This book of statutes and judgments which Moses wrote in a book was placed in a pocket on the side of the ark. In contrast, the law written by God on tables of stone was placed inside the ark of the covenant. “And thou shalt put into the ark the testimony which I shall give thee” (Exodus 25:16).
We can note several distinctions in the two laws. They had different authors(writers), were written on different material, were placed in different locations, and had totally different content.