These chapters of Leviticus cover various laws, and throughout these chapters are two phrases, "I am the Lord your God," and "Be ye holy, for I am holy." These laws reflect who God is, and when we align ourselves up to His laws and His ways, we become like Him. In chapter 20:8, the Lord declares, "I am the Lord who makes you holy." The Lord said a couple of times in these chapters that the Lord's people were not to be like the Egyptians where they left, or the Canaanites, where they are going, they are not to be like the world, but they are to be like God. These chapters cover most of the 10 Commandments, and then there were other laws to follow. They were to worship the Lord at the Tabernacle, and not build their own place. They were not to eat blood, or sacrifice their children to Molech, a god of the Ammonites. Many of the laws covered sexual sins, and then sins against a neighbor. We also find that the Lord cares for the lowly. Jesus said in the NT (Matthew 22:39-40), that the second greatest commandment is found in 19:18, "Do not seek revenge or bear a grudge against one of your people, but love your neighbor as yourself. I am the Lord." There were other laws about cutting hair, planting crops, eating meat, and cutting or marking bodies. They were to respect elders and the stranger among them. They were to deal honestly with all people. Jesus said that all the laws hang on two things, 1) Love the Lord your God with all your heart, soul, & mind, and 2) love your neighbor as yourself.
