17. Levi had three sons, whose names were Gershon, Kohath, and Merari.
18. The Gershonite family groups were Libni and Shimei.
19. The Kohathite family groups were Amram, Izhar, Hebron, and Uzziel.
20. The Merarite family groups were Mahli and Mushi.These were the family groups of the Levites.