Numbers 8:1-8

The LORD said to Moses, “Speak to Aaron and tell him, ‘Put the seven lamps where they can light the area in front of the lampstand.’ ” Aaron did this, putting the lamps so they lighted the area in front of the lampstand; he obeyed the command the LORD gave Moses. The lampstand was made from hammered gold, from its base to the flowers. It was made exactly the way the LORD had showed Moses. The LORD said to Moses, “Take the Levites away from the other Israelites and make them clean. This is what you should do to make them clean: Sprinkle the cleansing water on them, and have them shave their bodies and wash their clothes so they will be clean. They must take a young bull and the grain offering of flour mixed with oil that goes with it. Then take a second young bull for a sin offering.