13. for all the firstborn are mine. When I struck down all the firstborn in Egypt, I set apart for myself every firstborn in Israel, whether human or animal. They are to be mine. I am the Lord.”
14. The Lord said to Moses in the Desert of Sinai,
15. “Count the Levites by their families and clans. Count every male a month old or more.”
16. So Moses counted them, as he was commanded by the word of the Lord.
17. These were the names of the sons of Levi: Gershon, Kohath and Merari.
18. These were the names of the Gershonite clans: Libni and Shimei.
19. The Kohathite clans: Amram, Izhar, Hebron and Uzziel.
20. The Merarite clans: Mahli and Mushi. These were the Levite clans, according to their families.
21. To Gershon belonged the clans of the Libnites and Shimeites; these were the Gershonite clans.
22. The number of all the males a month old or more who were counted was 7,500.
23. The Gershonite clans were to camp on the west, behind the tabernacle.