1 Chronicles 24:5-6

5And they were divided by lot, one with another; for the princes of the sanctuary and the princes of 1God were of the sons of Eleazar and of the sons of Ithamar.

6And Shemaiah the son of Nethaneel the scribe, [one] of the Levites, inscribed them before the king, and the princes, and Zadok the priest, and Ahimelech the son of Abiathar, and the chief fathers of the priests and Levites: one father's house was drawn for Eleazar, and one drawn for Ithamar.