Moses and Aaron, Nadab and Abihu, and the seventy elders of Israel went up, ¹ 

¹ But to Moses the Lord ²  said, “Come up ³  to the Lord, you and Aaron, Nadab and Abihu, and seventy of the elders of Israel, and worship from a distance. ⁴ 

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

¹ “And you, bring near ²  to you your brother Aaron and his sons with him from among the Israelites, so that they may minister as my priests ³  – Aaron, Nadab and Abihu, Eleazar and Ithamar, Aaron’s sons.