1st Chronicles Chapter 24 American Standard-ASV1901
And there were more chief men found of the sons of Eleazar than of the sons of Ithamar; and `thus' were they divided: of the sons of Eleazar there were sixteen, heads of fathers' houses; and of the sons of Ithamar, according to their fathers' houses, eight.
And Shemaiah the son of Nethanel the scribe, who was of the Levites, wrote them in the presence of the king, and the princes, and Zadok the priest, and Ahimelech the son of Abiathar, and the heads of the fathers' `houses' of the priests and of the Levites; one fathers' house being taken for Eleazar, and one taken for Ithamar.
This was the ordering of them in their service, to come into the house of Jehovah according to the ordinance `given' unto them by Aaron their father, as Jehovah, the God of Israel, had commanded him.
These likewise cast lots even as their brethren the sons of Aaron in the presence of David the king, and Zadok, and Ahimelech, and the heads of the fathers' `houses' of the priests and of the Levites; the fathers' `houses' of the chief even as those of his younger brother.