'Common or Unclean' in the Bible

But Peter said, Not so, Lord; for I have never eaten any thing that is common or unclean.

And he said unto them, Ye know how that it is an unlawful thing for a man that is a Jew to keep company, or come unto one of another nation; but God hath shewed me that I should not call any man common or unclean.

But I said, Not so, Lord: for nothing common or unclean hath at any time entered into my mouth.