Numbers 3:18-23 New American Standard Bible (NASB)

18. These are the names of the sons of Gershon by their families: Libni and Shimei;

19. and the sons of Kohath by their families: Amram and Izhar, Hebron and Uzziel;

20. and the sons of Merari by their families: Mahli and Mushi. These are the families of the Levites according to their fathers' households.

21. Of Gershon was the family of the Libnites and the family of the Shimeites; these were the families of the Gershonites.

22. Their numbered men, in the numbering of every male from a month old and upward, even their numbered men were 7,500.

23. The families of the Gershonites were to camp behind the tabernacle westward,

Numbers 3