The Lord told Moses to provide a bronze altar and a laver for washing in the courtyard of the tabernacle. Both illustrate important lessons for Christians today. In this lesson we review the extraordinary story from Numbers behind the covering for the altar. That story is referenced by Jude in the New Testament, to address corrupt leaders in the church. We also consider the significance of the laver, in which the priests would wash to cleanse themselves before entering the tabernacle. Based on Scripture and insights from early Christians, we explore the significance of our own spiritual washing: first in the waters of baptism, and thereafter through confessing our sins.