1 Chronicles 24:3-5

24:3 David, Zadok (a descendant of Eleazar), and Ahimelech (a descendant of Ithamar) divided them into groups to carry out their assigned responsibilities. 24:4 The descendants of Eleazar had more leaders than the descendants of Ithamar, so they divided them up accordingly; the descendants of Eleazar had sixteen leaders, while the descendants of Ithamar had eight. 24:5 They divided them by lots, for there were officials of the holy place and officials designated by God among the descendants of both Eleazar and Ithamar.