'Law of Moses' in the Bible

And the sons of the Kenite, father-in-law of Moses, have gone up out of the city of palms with the sons of Judah to the wilderness of Judah, which is in the south of Arad, and they go and dwell with the people.

Now Heber the Kenite, which was of the children of Hobab the father in law of Moses, had severed himself from the Kenites, and pitched his tent unto the plain of Zaanaim, which is by Kedesh.