Numbers 8:21
And the Levites were made clean from sin, and their clothing was washed, and Aaron gave them for a wave offering before the Lord; and Aaron took away their sin and made them clean.
Numbers 8:7
And this is how you are to make them clean: let the holy water which takes away sin be put on them, and let the hair all over their bodies be cut off with a sharp blade, and let their clothing be washed and their bodies made clean.
Numbers 8:11-13
And Aaron is to give the Levites to the Lord as a wave offering from the children of Israel, so that they may do the Lord's work.
Numbers 8:15
After that, the Levites will go in to do whatever has to be done in the Tent of meeting; you are to make them clean and give them as a wave offering.
Numbers 3:12
See, I have taken the Levites out of the children of Israel to be mine in place of the first sons of the children of Israel;
Numbers 19:12
On the third day and on the seventh day he is to make himself clean with the water, and so he will be clean: but if he does not do this on the third day and on the seventh day, he will not be clean.
Numbers 19:19
Let the clean person do this to the unclean on the third day and on the seventh day: and on the seventh day he is to make him clean; and after washing his clothing and bathing himself in water, he will be clean in the evening.