1 Chronicles 24:2-4

New Life Version

² Nadab and Abihu died before their father died. They had no sons, so Eleazar and Ithamar became the religious leaders. ³ With the help of Zadok of the sons of Eleazar and Ahimelech of the sons of Ithamar, David divided them by their given duties. ⁴ More leaders were found from the sons of Eleazar than the sons of Ithamar. So they were divided in this way. There were sixteen heads of families of the sons of Eleazar. And there were eight heads of families of the sons of Ithamar.