1 Chronicles 24:1-4

Leeser(i) 1 And the divisions of the sons of Aaron were: The sons of Aaron were Nadab, and Abihu, El’azar, and Ithamar. 2 But Nadab and Abihu died before their father, and they had no children: and El’azar and Ithamar became priests. 3 And David divided them off with Zadok of the sons of El’azar’, and Achimelech of the sons of Ithamar, to their office in their service. 4 And the sons of El’azar were found more numerous in the chiefs of males than the sons of Ithamar; and they divided them accordingly. Of the sons of El’azar there were sixteen chiefs of the family divisions, and of the sons of Ithamar, eight for their family divisions.