Numbers Chapter 8 Verse 7And 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.

The golden spoons [were] twelve, full of incense, [weighing] ten [shekels] apiece, after the shekel of the sanctuary: all the gold of the spoons [was] an hundred and twenty [shekels].

All the oxen for the burnt offering [were] twelve bullocks, the rams twelve, the lambs of the first year twelve, with their meat offering: and the kids of the goats for sin offering twelve.

And all the oxen for the sacrifice of the peace offerings [were] twenty and four bullocks, the rams sixty, the he goats sixty, the lambs of the first year sixty. This [was] the dedication of the altar, after that it was anointed.

And when Moses was gone into the tabernacle of the congregation to speak with him, then he heard the voice of one speaking unto him from off the mercy seat that [was] upon the ark of testimony, from between the two cherubims: and he spake unto him.

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,

Take the Levites from among the children of Israel, and cleanse them.

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.

And the Levites shall lay their hands upon the heads of the bullocks: and thou shalt offer the one [for] a sin offering, and the other [for] a burnt offering, unto the LORD, to make an atonement for the Levites.

And thou shalt set the Levites before Aaron, and before his sons, and offer them [for] an offering unto the LORD.

Thus shalt thou separate the Levites from among the children of Israel: and the Levites shall be mine.

And after that shall the Levites go in to do the service of the tabernacle of the congregation: and thou shalt cleanse them, and offer them [for] an offering.

For they [are] wholly given unto me from among the children of Israel; instead of such as open every womb, [even instead of] the firstborn of all the children of Israel, have I taken them unto me.

For all the firstborn of the children of Israel [are] mine, [both] man and beast: on the day that I smote every firstborn in the land of Egypt I sanctified them for myself.

The Book of Numbers, Chapter 8, Verse 7