Exodus 24:9

24:9 Moses and Aaron, Nadab and Abihu, and the seventy elders of Israel went up,

Exodus 24:1

The Lord Ratifies the Covenant

24:1 But to Moses the Lord said, “Come up to the Lord, you and Aaron, Nadab and Abihu, and seventy of the elders of Israel, and worship from a distance.

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.