Exodus 6:23 ASV

²¹  And the sons of Izhar: Korah, and Nepheg, and Zichri.

²²  And the sons of Uzziel: Mishael, and Elzaphan, and Sithri.

²³  And Aaron took him Elisheba, the daughter of Amminadab, the sister of Nahshon, to wife; and she bare him Nadab and Abihu, Eleazar and Ithamar.

²⁴  And the sons of Korah: Assir, and Elkanah, and Abiasaph; these are the families of the Korahites.

²⁵  And Eleazar Aaron's son took him one of the daughters of Putiel to wife; and she bare him Phinehas. These are the heads of the fathers' 'houses' of the Levites according to their families.