Exodus 6:23-25

King James Version

²³ And Aaron took him Elisheba, daughter of Amminadab, sister of Naashon, 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 Korhites.

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 of the Levites according to their families.