9. You shall thus give the Levites to Aaron and to his sons; they are wholly given to him from among the sons of Israel.
10. So you shall appoint Aaron and his sons that they may keep their priesthood, but the layman who comes near shall be put to death."
11. Again the Lord spoke to Moses, saying,
12. "Now, behold, I have taken the Levites from among the sons of Israel instead of every firstborn, the first issue of the womb among the sons of Israel. So the Levites shall be Mine.
13. For all the firstborn are Mine; on the day that I struck down all the firstborn in the land of Egypt, I sanctified to Myself all the firstborn in Israel, from man to beast. They shall be Mine; I am the Lord."
14. Then the Lord spoke to Moses in the wilderness of Sinai, saying,