Exodus 6:25

6:25 Now Eleazar son of Aaron married one of the daughters of Putiel and she bore him Phinehas.

These are the heads of the fathers’ households of Levi according to their clans.

Exodus 6:23

6:23 Aaron married Elisheba, the daughter of Amminadab and sister of Nahshon, and she bore him Nadab and Abihu, Eleazar and Ithamar.

Exodus 28:1

The Clothing of the Priests

28:1 “And you, bring near to you your brother Aaron and his sons with him from among the Israelites, so that they may minister as my priests – Aaron, Nadab and Abihu, Eleazar and Ithamar, Aaron’s sons.