'Unclean' in the Bible

And the Lord said, "This is how the people of Israel will eat their unclean food among the nations where I will banish them."

And I said, "Ah, sovereign Lord, I have never been ceremonially defiled before. I have never eaten a carcass or an animal torn by wild beasts; from my youth up, unclean meat has never entered my mouth."

Her priests abuse my law and have desecrated my holy things. They do not distinguish between the holy and the profane, or recognize any distinction between the unclean and the clean. They ignore my Sabbaths and I am profaned in their midst.

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.