'Unclean' in the Bible

And there was in their synagogue a man with an unclean spirit; and he cried out,

And when the unclean spirit had torn him, and cried with a loud voice, he came out of him.

And they were all amazed, insomuch that they questioned among themselves, saying, What thing is this? what new doctrine is this? for with authority commandeth he even the unclean spirits, and they do obey him.

And unclean spirits, when they saw him, fell down before him, and cried, saying, Thou art the Son of God.

Because they said, He hath an unclean spirit.

And when he was come out of the ship, immediately there met him out of the tombs a man with an unclean spirit,

For he said unto him, Come out of the man, thou unclean spirit.

And forthwith Jesus gave them leave. And the unclean spirits went out, and entered into the swine: and the herd ran violently down a steep place into the sea, (they were about two thousand;) and were choked in the sea.

As He was stepping into the boat, the [Gentile] man who had been demon-possessed was begging with Him [asking] that he might go with Him [as a disciple].

And he called unto him the twelve, and began to send them forth by two and two; and gave them power over unclean spirits;

And they were casting out many demons and were anointing with oil many who were sick, and healing them.

They observed that some of His disciples were eating their bread with unclean—that is, unwashed—hands.

Then the Pharisees and the scribes asked Him, “Why don’t Your disciples live according to the tradition of the elders, instead of eating bread with ritually unclean hands?”

Nothing that goes into a person from the outside can make him unclean. It's what comes out of a person that makes a person unclean.

He asked them, "Are you so ignorant? Don't you know that nothing that goes into a person from the outside can make him unclean?

Then he continued, "It's what comes out of a person that makes a person unclean,

Because from inside, from the heart of men, come evil thoughts and unclean pleasures,

All these things come from inside and make a person unclean."

For a certain woman, whose young daughter had an unclean spirit, heard of him, and came and fell at his feet:

When Jesus saw that a crowd was rapidly coming together, He rebuked the unclean spirit, saying to it, “You mute and deaf spirit, I command you: come out of him and never enter him again!”

But when you see the unclean thing which makes destruction, in the place where it has no right to be (let this be clear to the reader), then let those who are in Judaea go quickly to the mountains: