'Unclean' in the Bible

Also the people from the cities in the vicinity of Jerusalem were coming together, bringing people who were sick or afflicted with unclean spirits, and they were all being healed.

For in the case of many who had unclean spirits, they were coming out of them shouting with a loud voice; and many who had been paralyzed and lame were healed.

But Peter said, “By no means, Lord, for I have never eaten anything unholy and unclean.”

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

But I said, ‘By no means, Lord, for nothing unholy or unclean has ever entered my mouth.’