'Evil Spirit' in the Bible

Many will say to me in that day, Lord, Lord, have we not prophesied in thy name, and in thy name have we cast out evil spirits, and in thy name done many powers?

And evening being come, they brought him many possessed with evil spirits: and he east out the spirits by the word, and cured all having evils:

And he having come beyond the country of the Gergesenes, two possessed with evil spirits, coming out of the tombs, met him, very rough, so that not any could pass by that way.

And the evil spirits besought him, saying, If thou cast us out, permit us to go away into the herd of swine.

And they feeding fled; and having come into the city, they announced all things, and those of the possessed with evil spirits.

And they having gone, behold they brought to him a man dumb, possessed with an evil spirit.

For John came neither eating nor drinking, and they say, He has an evil spirit.

And, behold, a woman, a Canaanite, having come forth from those boundaries, cried out to him, saying, Pity me, Lord, son of David; my daughter is badly possessed with an evil spirit.