1 Chronicles 24:5, 31

So they were divided by lot, one group with the other; for they were officers of the sanctuary and officers (high priests) of God, both from the descendants of Eleazar and from the descendants of Ithamar.

These also cast lots as did their relatives the sons of Aaron in the presence of David the king, Zadok, Ahimelech, and the heads of the fathers’ households of the priests and of the Levites—the head of father’s households as well as those of his younger brother.