The Summary of Families
3:17 These were the sons of Levi by their names: Gershon, Kohath, and Merari.
3:20 The sons of Merari by their families were Mahli and Mushi. These are the families of the Levites by their clans.
The Numbering of Merari
3:33 From Merari came the family of the Mahlites and the family of the Mushites; these were the families of Merari.