Kohanim Reporting for Duty!By Rabbi Jack Abramowitz
This chapter lists the “duty roster” of the kohanim (priests). The descendants of Aaron’s son Elazar were more numerous than those of his son Itamar, so the former were placed in charge of 16 shifts and the latter in charge of eight. The order of their shifts was determined by lottery; verses 6-18 provide the results.
And what about the rest of the Levites, who had not yet been assigned jobs? They also cast lots, to see which Levite family would work with which family of kohanim.