If you’re following our 2025 Bible reading plan, you have been reminded that Leviticus is one of those Old Testament books that can feel eternal. The descriptions of the various sacrifices can seem endless, and unless you’re a dermatologist, the detailed chapter about leprous boils and spots on the skin might gross you out or put you to sleep. But in spite of all the lengthy and detailed material in Leviticus that seems irrelevant to us today, there is a message in it for Christians—a crucial message if we are to fully appreciate what our Lord Jesus Christ has done for us.
The central message of Leviticus is that God is holy and that his people must be holy. Leviticus 19:2 says “Speak to all the congregation of the people of Israel and say to them, You shall be holy, for I the LORD your God am holy.” By his very nature God is righteous and just and holy. There is nothing wicked or sinful or filthy in him. If we lose sight of God’s holiness, then we have lost sight of God. If we—as is easy to do—think of God as our pal who doesn’t take sin very seriously, then we have misunderstood God. He reveals himself to the Israelites as a just God who is the very embodiment of all moral perfection. The LORD our God is holy.
Because God is holy, his people who are called by his name must be holy too. God makes this point very clearly in Leviticus (see Lev. 11:44, 45, 19:2, 20:26, 21:8). The details that fill the pages of Leviticus were God’s instructions to the Israelites on how to be holy so that they could receive God’s blessings. All the instructions about ritual washings and sacrifices unmistakably taught the lesson that God is holy and that God’s people must be holy.
The New Testament also teaches us that God is holy and that his people will be holy. Hebrews tells us that “our God is a consuming fire” (Heb. 12:29), a reference to his holiness. The same chapter urges us to “Strive for peace with everyone, and for the holiness without which no one will see the Lord” (Heb. 12:14). If it were just up to us, we could not be holy in God’s sight. But praise God that he has made a way for us to come near to him through Jesus. Instead of all the priests and rituals and regulations of the Old Law, Jesus offered himself as the perfect sacrifice once for all and opened up a new way for us to come into the Father’s very presence. So as you read the lengthy, detailed chapters of Leviticus, focus on the main lesson: God is holy, and his people must be holy. And give thanks for Jesus, who died and was raised for our sins, who makes us holy, and who brings us near to our holy and loving Father.