'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.

And Heber the Kenite hath been separated from the Kenite, from the sons of Hobab father-in-law of Moses, and he stretcheth out his tent unto the oak in Zaanaim, which is by Kedesh.