1 Chronicles 24:3

1 Now these were the divisions of the sons of Aaron: The sons of Aaron: Nadab, and Abiu, and Eleazar, and Ithamar.

2 But Nadab and Abiu died before their father, and had no children: so Eleazar, and Ithamar did the office of the priesthood.

3 And David distributed them, that is, Sadoc of the sons of Eleazar, and Ahimelech of the sons of Ithamar, according to their courses and ministry.

4 And there were found many more of the sons of Eleazar among the principal men, than of the sons of Ithamar. And he divided them so, that there were of the sons of Eleazar, sixteen chief men by their families: and of the sons of Ithamar eight by their families and houses.

5 And he divided both the families one with the other by lot: for there were princes of the sanctuary, and princes of God, both of the sons of Eleazar, and of the sons of Ithamar.

6 And Semeias the son of Nathanael the scribe a Levite, wrote them down before the king and the princes, and Sadoc the priest, and Ahimelech the son of Abiathar, and the princes also of the priestly and Levitical families: one house, which was over the rest, of Eleazar: and another house, which had the rest under it, of Ithamar.