Numbers 8:6-8

Amplified Bible

⁶ “Take the Levites from among the sons of Israel and cleanse them. ⁷ This is what you shall do to them to [ceremonially] cleanse them: sprinkle the water of purification on them, and let them use a razor over their whole body and wash their clothes, and they will be clean.^{(A) 8} Then let them take a young bull and its grain offering of fine flour mixed with oil, and you shall take another young bull as a sin offering.