'Unclean Spirit' in the Bible

Now there was a man with an unclean spirit in their synagogue, who at once shrieked out,

And after convulsing him the unclean spirit did come out of him with a loud cry.

Then they were all so amazed that they discussed it together, saying, "Whatever is this?" "It's new teaching with authority behind it!" "He orders even unclean spirits!" "Yes, and they obey him!"

And whenever the unclean spirits saw him they fell down before him, screaming, "You are the Son of God!"

(This was because they said, "He has an unclean spirit.")

And as soon as he stepped out of the boat a man from the tombs came to meet him, a man with an unclean spirit

(For he had said, "Come out of the man, you unclean spirit.")

And Jesus gave them leave. Then out came the unclean spirits and entered the swine, and the drove rushed down the steep slope into the sea (there were about two thousand of them) and in the sea they were drowned.

And summoning the twelve he proceeded to send them out two by two; he gave them power over the unclean spirits,

a woman heard of him, whose daughter had an unclean spirit, and she came in and fell at his feet

Now as Jesus saw that a crowd was rapidly gathering, he checked the unclean spirit. "Deaf and dumb spirit," he said, "leave him, I command you, and never enter him again."

Afterwards he appeared at table to the eleven themselves and reproached them for their unbelief and dulness of mind, because they had not believed those who saw him risen from the dead. [But they excused themselves, saying, "This age of lawlessness and unbelief lies under the sway of Satan, who will not allow what lies under the unclean spirits to understand the truth and power of God; therefore," they said to Christ, "reveal your righteousness now." Christ answered them, "The term of years for Satan's power has now expired, but other terrors are at hand. I was delivered to death on behalf of sinners, that they might return to the truth and sin no more, that they might inherit that glory of righteousness which is spiritual and imperishable in heaven."]