'Common or Unclean' in the Bible

But Peter said, No, Lord; for I have never taken food which is common or unclean.

And he said to them, You yourselves have knowledge that it is against the law for a man who is a Jew to be in the company of one who is of another nation; but God has made it clear to me that no man may be named common or unclean:

But I said, No, Lord; for nothing common or unclean has ever come into my mouth.