'Unclean' in the Bible

and there were coming together also the people of the cities round about to Jerusalem, bearing ailing persons, and those harassed by unclean spirits -- who were all healed.

for unclean spirits came forth from many who were possessed, crying with a loud voice, and many who have been paralytic and lame were healed,

And Peter said, 'Not so, Lord; because at no time did I eat anything common or unclean;'

And he said unto them, 'Ye know how it is unlawful for a man, a Jew, to keep company with, or to come unto, one of another race, but to me God did shew to call no man common or unclean;

and I said, Not so, Lord; because anything common or unclean hath at no time entered into my mouth;