Numbers 3:1-4
Priests and Levites
3aNow these are the generations of Aaron and Moses at the time when Yahweh spoke with Moses on Mount Sinai. 2aThese then are the names of the sons of Aaron: Nadab the firstborn, and Abihu, Eleazar and Ithamar. 3These are the names of the sons of Aaron, the aanointed priests, whom he 1ordained to minister as priests. 4aBut Nadab and Abihu died before Yahweh when they offered strange fire before Yahweh in the wilderness of Sinai; and they had no children. So Eleazar and Ithamar ministered as priests 1in the lifetime of their father Aaron.