'Common or Unclean' in the Bible

But Peter said, "No, Lord; for I have never eaten anything that is common or unclean."

And he said to them, "You yourselves know how unlawful it is for a Jew to associate with a foreigner or to visit him; but God has shown me that I should not call any man common or unclean.

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