Leviticus 10:10, 11
You must distinguish between the holy and the common, between the clean and the unclean, . . .

Deuteronomy 33:10
They will teach Your ordinances to Jacob and Your law to Israel; they will set incense before You and whole burnt offerings on Your altar.

Ezekiel 44:23, 24
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. . . .

Malachi 2:7
For the lips of a priest should preserve knowledge, and people should seek instruction from his mouth, because he is the messenger of the LORD of Hosts."

Titus 1:9
He must hold firmly to the trustworthy message as it was taught, so that by sound teaching he will be able to encourage others and refute those who contradict this message.