Leviticus 16 concludes with instructions establishing the Day of Atonement as an annual observance for Israel. On the appointed day, the people were commanded to humble themselves and refrain from ordinary work. The high priest performed the prescribed rituals to make atonement for the sanctuary, the priests, and the entire community.
The observance was intended to cleanse the people from their sins before the Lord. Because the ceremony was repeated annually, it became a continuing reminder of the seriousness of sin and the need for reconciliation with God.