1 Chronicles 24:1-3

Revised Geneva Translation

24 Also, these are the divisions of the sons of Aaron. The sons of Aaron were Nadab and Abihu, Eleazar and Ithamar.

² But Nadab and Abihu died before their father and had no children. Therefore, Eleazar and Ithamar executed the Priest’s office.

³ And David distributed them, Zadok of the sons of Eleazar and Ahimelech of the sons of Ithamar, according to their offices in their ministration.