Ezekiel 36:25

36:25 I will sprinkle you with pure water ¹  and you will be clean from all your impurities. I will purify you from all your idols.

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. ² 

[36:25]  ¹ sn The Lord here uses a metaphor from the realm of ritual purification. For the use of water in ritual cleansing, see Exod 30:19-20; Lev 14:51; Num 19:18; Heb 10:22.

[44:23]  ² sn This task was a fundamental role of the priest (Lev 10:10).