Leviticus 14:57
And to teach in the day of being unclean, and in the day of cleansing: this the law of leprosy.
Leviticus 10:10
And to separate between the holy and between the unholy, and between the unclean and between the clean:
Deuteronomy 24:8
Watch in the stroke of leprosy to watch greatly, and to do according to all that the priests the Levites shall teach you: as I commanded them ye shall watch to do.
Jeremiah 15:19
For this, thus said Jehovah, If thou wilt turn back, and I will turn thee back, thou shalt stand before me: and if thou shalt bring forth the precious from the vile thou shalt be as my mouth: they shall turn back to thee and thou shalt not turn back to them.
Ezekiel 44:23
And they shall point out to my people between the holy to the profane, and they shall cause them to know between the unclean to the clean.