'Demon' in the Bible

In the synagogue there was a man who had a spirit of an unclean demon, and he cried out with a loud voice,

Jesus rebuked him, saying, "Be silent, and come out of him!" When the demon had thrown him down in their midst, he came out of him, having done him no harm.

For John the Baptizer came neither eating bread nor drinking wine, and you say, 'He has a demon.'

For Jesus was commanding the unclean spirit to come out of the man. For the unclean spirit had often seized the man. He was kept under guard, and bound with chains and fetters. Breaking the bands apart, he was driven by the demon into the desert.

While he was still coming, the demon threw him down and convulsed him violently. But Jesus rebuked the unclean spirit, and healed the boy, and gave him back to his father.

He was casting out a demon, and it was mute. It happened, when the demon had gone out, the mute man spoke; and the multitudes marveled.