Leviticus can also be called “The Book of the Law of the Priests” as it contains very little historical matter, concerning itself with priestly legislation and the practice of the Law among the people. Much importance is placed upon Israel’s separation from all heathen influences so that the nation may retain its religious purity.

Leviticus 8

8:13 And Moses brought Aaron's sons, and put coats upon them, and girded them with girdles, and put bonnets upon them; as the LORD commanded Moses.