Leviticus is also known as the 'Book of Atonement' and details the holiness and sacrificial procedures that the covenant people must keep in mind.
These include the laws for offering offerings to God in the tabernacle, the rules for priests, laws for daily life such as food and health, laws for the holidays that the people must observe, and rules for rewards and punishments.

Be holy, for I am holy.
The way of life that God's people live is 'holy.'
How can God's people maintain their dignity in a sinful world? What pleases God, and what displeases Him? Leviticus is the book that explains in detail what God's people must do.
God gave Moses commandments and laws to proclaim to the people.
Leviticus chapters 1-10 are about holiness in the relationship between God and man, and chapters 11-27 are about holiness in living a life set apart as God's people.
Leviticus is not an easy book to read.
But once you realize its meaning, it is a book that you read with tears in your eyes.
Leviticus contains the sacrifice of Jesus.
Jesus was the perfect offering to God.
Jesus willingly bore the cross to atone for our sins.
Let us learn the true meaning of holiness and sacrifice by transcribing Leviticus.

--- From the text