'Unclean Spirit' in the Bible

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

And the unclean spirit convulsing him, and crying out with a loud voice, came out of him.

And they were all amazed, so that they questioned each other, saying, What is this? New teaching with authority; even the unclean spirits doth he command, and they obey him!

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

Because they said, He hath an unclean spirit.

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

For he was saying to him, Unclean spirit, come out from the man.

And he gave them leave. And the unclean spirits coming out, entered into the swine; and the herd rushed down the steep into the lake, about two thousand, and were drowned in the lake.

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

But a woman, whose young daughter had an unclean spirit, immediately hearing of him, came in, and fell at his feet.

And Jesus seeing that the multitude came running together, rebuked the unclean spirit, saying to it, Dumb and deaf spirit, I command thee, come out of him, and enter no more into him.