Numbers 1:17

1:17 So Moses and Aaron took these men who had been mentioned specifically by name,

Numbers 20:25

20:25 Take Aaron and Eleazar his son, and bring them up on Mount Hor.

Numbers 26:1

A Second Census Required

26:1 After the plague the Lord said to Moses and to Eleazar son of Aaron the priest,

Numbers 26:60

26:60 And to Aaron were born Nadab and Abihu, Eleazar and Ithamar.

Numbers 33:39

33:39 Now Aaron was 123 years old when he died in Mount Hor.