Numbers 8:7-9

Revised Standard Version

⁷ And thus you shall do to them, to cleanse them: sprinkle the water of expiation upon them, and let them go with a razor over all their body, and wash their clothes and cleanse themselves. ⁸ Then let them take a young bull and its cereal offering of fine flour mixed with oil, and you shall take another young bull for a sin offering. ⁹ And you shall present the Levites before the tent of meeting, and assemble the whole congregation of the people of Israel.