1CH 27:1

1 Now the Bnei Yisroel after their number, namely, the rashei ha'avot and sarim of alafim and me'ot [(hundreds)], and their shoterim that served HaMelech in any matter of the divisions, which came in and went out chodesh b'chodesh [(month by month)] throughout all the months of the shanah, each division consisting of twenty and four elef.