And said to them, You are the heads of the families of the Levites: make yourselves holy, you and your brothers, so that you may take the ark of the Lord, the God of Israel, to the place which I have made ready for it.
And there were more chiefs among the sons of Eleazar than among the sons of Ithamar; and this is how they were grouped: of the sons of Eleazar there were sixteen, all heads of families; and of the sons of Ithamar, heads of families, there were eight.
The Levites in the days of Eliashib, Joiada, and Johanan, and Jaddua, were listed as heads of families; and the priests, when Darius the Persian was king.