Hashem instructed Moshe to relay the priestly laws to the Kohanim. The laws included rules on contact with dead bodies, grooming restrictions, marriage guidelines, and sacrificial practices.
Specific sacred occasions, such as Shabbas, Pesach, Shavuos, Rosh Hashana, Yom Kippur, and Sukkos, were to be observed.
Additional instructions encompassed lighting the Tabernacle lamps, baking special loaves, handling blasphemy cases, and penalties for cursing God, murder, and maiming.