13. And thou shalt cause the Levites to present themselves before Aaron, and before his sons, and offer them for an offering unto the Lord.
14. And thou shalt separate the Levites from among the sons of Israel; and the Levites shall be mine.
15. Thus shall the Levites go in to minister in the tabernacle of the testimony; and thou shalt cleanse them and wave them for an offering.
16. For they are completely given unto me from among the sons of Israel, instead of each one that opens the womb; instead of the firstborn of all the sons of Israel, I have taken them for myself.