teach

Leviticus 10:10
You must distinguish between the holy and the common, between the clean and the unclean,

Jeremiah 15:19
Therefore this is what the LORD says: "If you return, I will restore you; you will stand in My presence. And if you speak words that are noble instead of worthless, you will be My spokesman. It is they who must return to you, but you must not return to them.

Ezekiel 44:23
They are to teach My people the difference between the holy and the common, and show them how to discern between the clean and the unclean.

this is

Deuteronomy 24:8
In cases of infectious skin diseases, be careful to diligently follow everything the Levitical priests instruct you. Be careful to do as I have commanded them.