I Chronicles 24:5, 31

Thus they were divided by lot, one group as another, for there were officials of the sanctuary and officials of the house of God, from the sons of Eleazar and from the sons of Ithamar.

These also cast lots just as their brothers the sons of Aaron did, in the presence of King David, Zadok, Ahimelech, and the heads of the fathers’ houses of the priests and Levites. The chief fathers did just as their younger brethren.