Numbers 8:21
The descendants of Levi therefore purified themselves, washed their clothes, and then Aaron presented them as wave offerings to the LORD. Aaron provided atonement for them to purify them.
Numbers 8:7
This is what you are to do for them in order to purify them: Sprinkle purifying water over them, have them shave their skin, and then have them wash their garments, and they will be purified.
Numbers 8:11-13
"Then Aaron is to present the descendants of Levi as a wave offering before the LORD from the Israelis, because they are to work in the service of the LORD.
Numbers 8:15
"After this, the descendants of Levi are to come to serve at the appointed place of meeting, after you have purified them and presented them as wave offerings,
Numbers 3:12
"I'm taking the descendants of Levi for myself from among the Israelis in place of every first-born who opens the womb. The descendants of Levi belong to me
Numbers 19:12
He is to purify himself on the third day and he will be clean on the seventh day. But if he can't purify himself on the third day then he can't be clean on the seventh day.
Numbers 19:19
The clean person is to sprinkle the unclean person on the third day and seventh day and then he is to purify himself on the seventh day, wash his clothes, and bathe with water. He is to be considered clean at evening.