Numbers 3:12-17 English Standard Version (ESV)

12. “Behold, I have taken the Levites from among the people of Israel instead of every firstborn who opens the womb among the people of Israel. 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 consecrated for my own all the firstborn in Israel, both of man and of beast. They shall be mine: I am the Lord.”

14. And the Lord spoke to Moses in the wilderness of Sinai, saying,

15. “List the sons of Levi, by fathers’ houses and by clans; every male from a month old and upward you shall list.”

16. So Moses listed them according to the word of the Lord, as he was commanded.

17. And these were the sons of Levi by their names: Gershon and Kohath and Merari.

Numbers 3