Numbers 8:20
And Moses, and Aaron, and all the congregation of the children of Israel, did to the Levites according unto all that the LORD commanded Moses concerning the Levites, so did the children of Israel unto them. And Moses, and Aaron, and all the congregation of the children of Israel, did to the Levites according unto all that the LORD commanded Moses concerning the Levites, so did the children of Israel unto them.
Moses and Aaron together with all the congregation of Israel dealt with the Levites in complete conformity to all that the Lord had commanded Moses concerning them. Nothing was left undone of the divine instructions for their consecration and ordering. By that obedient action the priests and Levites were appointed to the temple service according to the directions given through Moses.