'Common or Unclean' in the Bible

To them he said: "You know, yourselves, that it is illegal for a Jew to associate with or to visit one of another nation; but God has taught me that I should not call any man common or unclean. For this reason, when sent for, I came without demur.

"'Not so, my Lord' said I, 'for nothing common or unclean has ever gone into my mouth.'