'Unclean Spirit' in the Bible

And just then there was in their synagogue a man with an unclean spirit, and he shouted,

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

And they were all amazed, so that they questioned among themselves, saying, "What is this? A new teaching? For with authority he commands even the unclean spirits, and they obey him."

And the unclean spirits, whenever they saw him, fell down before him, and shouted, saying, "You are the Son of God."

because they said, "He has an unclean spirit."

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

For he said to him, "Come out of the man, you unclean spirit."

And he gave them permission. The unclean spirits came out and entered into the pigs. The herd of about two thousand rushed down the steep bank into the sea, and they were drowned in the sea.

And he called to himself the twelve, and began to send them out two by two; and he gave them authority over the unclean spirits.

For a woman, whose little daughter had an unclean spirit, having heard of him, immediately came and fell down at his feet.

When Jesus saw that a crowd came running together, he rebuked the unclean spirit, saying to him, "You deaf and mute spirit, I command you, come out of him, and never enter him again."