9 You are to give the Levites to Aaron and his sons. Out of Bnei-Yisrael they are dedicated entirely to him.
10 You are to appoint Aaron and his sons to maintain the priesthood; any commoner who approaches must be executed.”
11 Then Adonai said to Moses saying,
12 “See, I have taken the Levites from among Bnei-Yisrael in place of the firstborn who open the womb among Bnei-Yisrael. The Levites will be Mine,
13 because all the firstborn are Mine. In the day when I was striking down all the firstborn in the land of Egypt, I consecrated to Myself every firstborn in Israel—whether man or animal—as Mine. I am Adonai.”
14 Adonai spoke in the Sinai wilderness to Moses saying,
15 “Count the sons of Levi. According to their ancestral house, by their families, every male a month old and upward you are to number them.”