Numbers 3:3-5

Darby Translation

³ These are the names of the sons of Aaron, the anointed priests, who were consecrated to exercise the priesthood.

⁴ And Nadab and Abihu died before Jehovah when they offered strange fire before Jehovah in the wilderness of Sinai, and they had no sons; and Eleazar and Ithamar exercised the priesthood in the presence of Aaron their father.

⁵ And Jehovah spoke to Moses, saying,