Leviticus 14:57
to show when it is unclean and when it is clean. This is the law for leprous disease.
Leviticus 10:10
You are to distinguish between the holy and the common, and between the unclean and the clean,
Deuteronomy 24:8
"Take care, in a case of leprous disease, to be very careful to do according to all that the Levitical priests shall direct you. As I commanded them, so you shall be careful to do.
Jeremiah 15:19
Therefore thus says the LORD: "If you return, I will restore you, and you shall stand before me. If you utter what is precious, and not what is worthless, you shall be as my mouth. They shall turn to you, but you shall not turn to them.
Ezekiel 44:23
They shall teach my people the difference between the holy and the common, and show them how to distinguish between the unclean and the clean.