14 Thus you shall separate the Levites from among the Israelites, and the Levites shall be Mine [in a very special sense].
15 And after that the Levites shall go in to do service at the Tent of Meeting, when you have cleansed them and offered them as a wave offering.
16 For they are wholly given to Me from among the Israelites; instead of all who open the womb, the firstborn of all the Israelites, I have taken the Levites for Myself.
17 For all the firstborn of the Israelites are Mine, both of man and beast; on the day that I smote every firstborn in the land of Egypt [not of Israel], I consecrated them and set them apart for Myself.
18 And I have taken the Levites instead of all the firstborn of the Israelites.
19 And I have given the Levites as a gift to Aaron and to his sons from among the Israelites to do the service of the Israelites at the Tent of Meeting and to make atonement for them, that there may be no plague among the Israelites if they should come near the sanctuary.
20 So Moses and Aaron and all the congregation of the Israelites did thus to the Levites; according to all that the Lord commanded Moses concerning [them], so did the Israelites to them.