Numbers:3:1-4
rsv@Numbers:3:1 @ These are the generations of Aaron and Moses at the time when the LORD spoke with Moses on Mount Sinai.
rsv@Numbers:3:2 @ These are the names of the sons of Aaron: Nadab the first-born, and Abi'hu, Elea'zar, and Ith'amar;
rsv@Numbers:3:3 @ these are the names of the sons of Aaron, the anointed priests, whom he ordained to minister in the priest's office.
rsv@Numbers:3:4 @ But Nadab and Abi'hu died before the LORD when they offered unholy fire before the LORD in the wilderness of Sinai; and they had no children. So Elea'zar and Ith'amar served as priests in the lifetime of Aaron their father.