Numbers 8:21
And the Levites purified themselves from sin, and they washed their clothes. And Aaron offered them for a wave-offering before LORD, and Aaron made atonement for them to cleanse them.
Numbers 8:7
And thus thou shall do to 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.
Numbers 8:11-13
And Aaron shall offer the Levites before LORD for a wave-offering on the behalf of the sons of Israel, that it may be theirs to do the service of LORD.
Numbers 8:15
And after that the Levites shall go in to do the service of the tent of meeting. And thou shall cleanse them, and offer them for a wave-offering.
Numbers 3:12
And I, behold, I have taken the Levites from among the sons of Israel instead of all the first-born who opens the womb among the sons of Israel. And the Levites shall be mine,
Numbers 19:12
The same shall purify himself with it on the third day, and on the seventh day he shall be clean, but if he does not purify himself the third day, then the seventh day he shall not be clean.
Numbers 19:19
And the clean man shall sprinkle upon the unclean on the third day, and on the seventh day. And on the seventh day he shall purify him. And he shall wash his clothes, and bathe himself in water, and shall be clean at evening.