1 Chronicles 24:5-6

5Thus were they divided by lot, one sort with another; for the governors of the sanctuary, and governors of the house of God, were of the sons of Eleazar, and of the sons of Ithamar.

6And Shemaiah the son of Nethaneel the scribe, one of the Levites, recorded them before the king, and the princes, and Zadok the priest, and Ahimelech the son of Abiathar, and before the heads of the father’s houses of the priests and Levites: one principal household being taken for Eleazar, and one taken for Ithamar.1