Christians talk about blood all the time. We even sing about it. No one else does that. Why do we do that? We know that Jesus' blood is precious, but why? We are starting into the second half of the book of Leviticus. So far, blood has been strangely both dangerous, separating us from God, and life-giving, bringing us to God. In this sermon we come to Leviticus 17, perhaps the most important chapter in all the Bible for understanding precisely why blood is precious to Christians.