Numbers 8:5-7

American Standard Version

⁵ And Jehovah spake unto Moses, saying, ⁶ Take the Levites from among the children of Israel, and cleanse them. ⁷ And thus shalt thou do unto them, to cleanse them: sprinkle the water of expiation upon them, and let them cause a razor to pass over all their flesh, and let them wash their clothes, and cleanse themselves.