Numbers 3:21 WBT

¹⁹  And the sons of Kohath by their families; Amram, and Izehar, Hebron, and Uzziel.

²⁰  And the sons of Merari by their families; Mahli, and Mushi: these [are] the families of the Levites, according to the house of their fathers.

²¹  Of Gershon [was] the family of the Libnites, and the family of the Shimites: these [are] the families of the Gershonites.

²²  Those that were numbered of them, according to the number of all the males, from a month old and upward, [even] those that were numbered of them, [were] seven thousand and five hundred.

²³  The families of the Gershonites shall pitch behind the tabernacle westward.