The first seven chapters of Leviticus seem to be the most neglected passages of the Bible. Every year when someone begins to Bible reading plan and gets to Leviticus, they skip over it because we do not do sacrifices anymore. While it is true that we don't sacrifice animals and our pastors are not covered in blood, it is important to read those chapters because that is what God required under the old covenant.
Another reason we should read those chapters, is to help us, as my Old Testament professor in college once said, understand the sacrifice of Jesus. The death of Christ on the cross fulfilled the sacrificial law. We don't have to take blood from bulls and goats. We also don't have to repeatedly do them. 1 Peter 3:18 says, "For Christ also suffered once for sins, the righteous for the unrighteous, that he might bring us to God, being put to death in the flesh but made alive in the spirit."
A study note from the Reformation Study Bible says, "Christ’s substitutionary death is sufficient, and no further sacrifices are necessary." Jesus is the perfect sacrifice. We don't need any other sacrifice. Christ's death on the cross was enough.