'Unclean Spirit' in the Bible

And there was in their synagogue a man heaving an unclean spirit, and he cried out, saying, Let us alone:

And the unclean spirit having torn him, and cried with a loud noise, came out of him.

And they were all amazed, so that they questioned among themselves, saying, What is this? What new teaching is this? For with authority he commandeth even the unclean spirits and they 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 as he came out of the boat, there met him immediately out of the tombs a man with an unclean spirit,

(For he had said to him, Come out of the man, thou unclean spirit.)

And Jesus forthwith gave them leave. And the unclean spirits going out, entered into the swine, and the herd rushed down the steep into the sea, (they were about two thousand) and were choked in the sea.

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

For a woman whose young daughter had an unclean spirit,

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