are done to satisfy him and his just requirements. So God says to Moses, “When I see the blood …” (Ex. 12:13). The book of Leviticus played a large role in teaching the Israelite people that their relationship with God needed to be restored through a sacrifice. Every sacrifice was to be voluntary, costly, accompanied by a confession of sin, and according to God’s prescriptions. The life of the animal victim, symbolized by its blood, was given in exchange for the life of the guilty human worshiper.