Aaron married Elisheba, the daughter of Amminadab and the sister of Nahshon, and she gave birth to Nadab, Abihu, Eleazar, and Ithamar.

“Now bring your brother Aaron near, and his sons with him from among the sons of Israel, so that he may serve as priest to Me—Aaron, Nadab and Abihu, Eleazar and Ithamar, Aaron’s sons.

This is the sum of the things for the tabernacle, the tabernacle of the Testimony, as counted according to the command of Moses, for the work of the Levites, under the direction of Ithamar the son of Aaron the priest.