Leviticus (le-vĭt'i-kŭs), relating to the Levites. The name of the third book of the Pentateuch. Only the chapters 8-10 are history; the rest treats of the Levitical services—namely, chaps. 1-7, the laws of offerings; 8-10, the consecration of Aaron and his family; 11-15, the laws concerning that which is clean and that which is unclean; 16, the atonement as the sum-total of all means of grace; 17-20, the separation of Israel from heathendom in food, marriage, etc.; 21, 22, the holiness of priests and offerings; 23, 24, the holiness of convocations, Sabbaths; 25, on redemption; 26, on repentance; 27, on vows.