Leviticus chapters 18-27 which are the second half of this book, describes what kind of life those who have entered into a relationship with God through the sacrifice of the Lamb of God will have, and that will be a WHOLE life! Those whom God has redeemed will live lives set apart and walk in obedience to His word.
God does not tell us how to live until He has first told us about the way we come to Him. How great is our Lord that He first provides the way by which we can live for Him before He ever speaks of how that will look.
Far too often the church has insisted folks behave a certain way before they have ever explained the power availed to them to live the way that God commands. It is God’s provision that enables us to live the way that He has designed us to live and apart from Him we can do nothing. These chapters deal with our separation from the world but also our separation to the Lord.