Leviticus 16:18 describes a critical part of the Day of Atonement, a holy day dedicated to reconciling with God and seeking forgiveness for the sins of the people. The high priest, representing the people, performs a sacred ritual involving the blood of sacrificial animals. The blood is applied to the altar's horns, symbolizing the purification and sanctification of the place of worship. This act is not just about physical cleanliness but represents a spiritual cleansing, removing the barriers between God and His people.
The use of blood in this ritual signifies the seriousness of sin and the cost of atonement. Blood, representing life, is offered to cleanse and renew the covenant relationship with God. This ritual underscores the themes of repentance, forgiveness, and the transformative power of divine grace. It serves as a reminder of the need for humility and the continual pursuit of holiness in one's life. For Christians, this Old Testament practice foreshadows the ultimate atonement made through Jesus Christ, who is believed to have fulfilled the need for such sacrifices through His death and resurrection, offering eternal reconciliation with God.