The Book of Leviticus is known as the Law, that is the Law that Moses -- not God -- gave to his people in the wake of the golden calf and the rejection of the Ten Commandments. The Law is inextricably bound to the Levitical priesthood instituted at the same time.
It is common for readers of the Bible to skip Leviticus, or to skim over it quickly: its detailed listing of seemingly inscrutable laws have very little in common with our daily lives. Further, there are commentators who suggest that the purpose of the Book of Leviticus was for Israel and Israel only, but now that the sacrificial system of the Temple does not hold anymore, the book has nothing substantial or meaningful to offer us.
Nevertheless, within Catholic Tradition, Leviticus holds a place of pride because it is a foreshadowing of the Sacrifice of the Mass.
This in-depth study of Leviticus will help you to:
Understand what God has always intended the Mass to be.
Deepen your appreciation for the efficacy of the Eucharist, and
Lead you into a deeper devotion to the Lord hidden in the Eucharist.