'Unclean' in the Bible
And so then there was a man in their synagogue with an unclean spirit, and he cried out,
And [after] convulsing him and crying out with a loud voice, the unclean spirit came out of him.
And they were all amazed, so that [they began] to discuss with one another, saying, "What is this? A new teaching with authority! He even commands the unclean spirits and they obey him."
And the unclean spirits, whenever they saw him, were falling down before him and crying out, saying, "You are the Son of God!"
And [as] he was getting out of the boat, immediately from the tombs a man with an unclean spirit went to meet him,
(For he was saying to him, "Come out of the man, unclean spirit!")
And he permitted them. And the unclean spirits came out [and] entered into the pigs, and the herd--about two thousand--rushed headlong down the steep slope into the sea and were drowned in the sea.
And he summoned the twelve and began to send them out two [by] two, and gave them authority over the unclean spirits.
And they saw that some of his disciples were eating their bread with unclean--that is, unwashed--hands.
And the Pharisees and the scribes asked him, "Why do your disciples not live according to the tradition of the elders, but eat their bread with unclean hands?"
But immediately a woman whose young daughter was possessed by an unclean spirit, [when she] heard about him, came [and] fell down at his feet,
Now [when] Jesus saw that a crowd was running together, he rebuked the unclean spirit, saying to it, "Mute and deaf spirit, I command you, come out of him, and enter into him no more!"