'Evil Spirit' in the Bible

And I saw three evil spirits that looked like frogs; [one was] coming out of the mouth of the dragon, [one] out of the mouth of the beast, and [one] out of the mouth of the false prophet.

And he called out with a loud voice, saying, "Fallen! The great Babylon has fallen, and has become a place where demons live, and a haunt for every evil spirit and every filthy and obnoxious bird {{Some ancient manuscripts add "and every filthy and obnoxious animal"}}.