9 And thou shalt give the Levites to Aaron and to his sons: they are wholly given to him out of the children of Israel.
10 And Aaron and his sons shalt thou appoint that they may attend to their priest's office; and the stranger that cometh near shall be put to death.
11 And Jehovah spoke to Moses, saying,
12 And I, behold, I have taken the Levites from among the children of Israel instead of every firstborn that breaketh open the womb among the children of Israel, and the Levites shall be mine;
13 for every firstborn is mine. On the day that I smote all the firstborn in the land of Egypt, I hallowed unto me all the firstborn in Israel, both of man and beast; mine shall they be: I am Jehovah.
14 And Jehovah spoke to Moses in the wilderness of Sinai, saying,
15 Number the sons of Levi according to their fathers' houses, after their families; every male from a month old and upward shalt thou number them.