The third book of the Pentateuch, so called as containing the laws and ordinances appointed to regulate the services of the sanctuary as conducted by a priesthood of the tribe of Levi, the narrative portion of it recording the consecration of Aaron and his sons, the death of Nadab and Abihu, and the stoning of the blasphemer, embracing a period of only one year, and the legislation of it no longer issuing from Mount Sinai, but from the door of the Tabernacle.