Different Types Of Laws

Moral Laws (10 Commandments written by the finger of God), Civil Laws (Dietary and Judicial also), and Ceremonial Laws (Sacrifices, Feast Days, etc.). In giving the Law to the Hebrew people, Moses taught the Israelites what the Lord expected of them-- that they were to be a holy people separated from the pagan immorality and idolatry of their surroundings. Here the foundation of Judaism was laid. A God given religious system all centering around the Tabernacle (the place where the blood was sprinkled on the ark), the Sacrifices, and the Priesthood. The Levites were the priestly tribe, and Aaron (Moses` brother) was the first High Priest.

Link: https://bible-history.com/old-testament/the-law-of-moses