'Demons' in the Bible

And the rest of humanity who were not killed by these plagues did not repent of the works of their hands, {in order not to worship} the demons and the gold and silver and bronze and stone and wooden idols, which are able neither to see nor to hear nor to walk,

For they are the spirits of demons performing signs that go out to the kings of the whole inhabited world, to gather them for the battle of the great day of God the All-Powerful.

And he cried out with a powerful voice, saying, "Fallen, fallen [is] Babylon the great, and it has become a dwelling place of demons and a haunt of every unclean spirit and a haunt of every unclean bird and a haunt of every unclean and detested animal.