The primary proponnents of a division of the Law of Moses into a Moral Law and a Ceremonial law are the Seventh Day Adventists. S.D.A.'s impose on Scripture a division not made by Scripture itself. Consider the following:
- Hezekiah appointed "the king's portion of his substance for the burnt offerings . . . for the sabbaths, and for the new moons, and for the set feasts, as it is written in the law of the LORD." (2 Chron. 31:3). This passage indicates that the "law of the LORD" includes "ceremonial" aspects (i.e., feasts, burnt offerings) as well as "moral law". (S.D.A.'s teach that the "law of Moses" refers to the ceremonial aspects, whereas the "law of the LORD" refers to the moral law.)
- In Numbers 31:21 the ordinance of "the law which the LORD commanded Moses" is stated concerning the men who had returned from battle with the spoils of war. "The law which the LORD commanded Moses" is not, therefore, an expression exclusively used for the decalogue. The passage also indicates that "the law" cannot be divided between "ceremonial" and "moral aspects" since the above instructions regarding war had a moral intent.
- God's decree forbidding marriage with the alien is not specifically indicated in the decalogue but is written in the "book of the law of Moses" (Josh. 23:6,12) and likewise contains a moral intent.
I hope you have found this helpful.