This document provides an introduction and overview of the biblical book of Leviticus. It begins by noting that Leviticus follows Exodus in the biblical narrative and details the worship practices that were to take place in the tabernacle. The document then outlines the key sections of Leviticus, including laws regarding offerings, priests, purity, the Day of Atonement, and holiness. It identifies the "big idea" of Leviticus as being holy because God is holy. Finally, it discusses the meaning of holiness and its distinction from purity, as well as areas of modern life where holiness should be seen.