Ezekiel 28:19

28:19 All who know you among the peoples are shocked at you;

you have become terrified and will be no more.’”

Ezekiel 44:23

44:23 Moreover, they will teach my people the difference between the holy and the common, and show them how to distinguish between the ceremonially unclean and the clean. ¹ 

[44:23]  ¹ sn This task was a fundamental role of the priest (Lev 10:10).