Exodus 6:21-25

And the sons of Izhar; Korah, and Nepheg, and Zichri.

And the sons of Uzziel; Mishael, and Elzaphan, and Zithri.

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

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

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 of the Levites according to their families.