1)
What did the lottery decide?
1.
'Rashi': It decided their order [in which they serve]. Radak - there were "Sarei Kodesh v'Sarei ha'Elokim" from Bnei Elazar and from Bnei Itamar. Neither had an attribute to have precedence over the other, except for Kehunah Gedolah, which was from Elazar. Therefore, a lottery was needed to fix their order.
2)
What do we learn from "Sarei Kodesh v'Sarei ha'Elokim"?


