Numbers 8:6 (KJV)

And the LORD spake unto Moses, saying,

Speak unto Aaron and say unto him, When thou lightest the lamps, the seven lamps shall give light over against the candlestick.

And Aaron did so; he lighted the lamps thereof over against the candlestick, as the LORD commanded Moses.

And this work of the candlestick was of beaten gold, unto the shaft thereof, unto the flowers thereof, was beaten work: according unto the pattern which the LORD had shewed Moses, so he made the candlestick.

And the LORD spake unto Moses, saying,

And thus shalt thou do unto them, to cleanse them: Sprinkle water of purifying upon them, and let them shave all their flesh, and let them wash their clothes, and so make themselves clean.

Then let them take a young bullock with his meat offering, even fine flour mingled with oil, and another young bullock shalt thou take for a sin offering.

And thou shalt bring the Levites before the tabernacle of the congregation: and thou shalt gather the whole assembly of the children of Israel together:

And thou shalt bring the Levites before the LORD: and the children of Israel shall put their hands upon the Levites:

And Aaron shall offer the Levites before the LORD for an offering of the children of Israel, that they may execute the service of the LORD.