Then I saw issuing from the mouth of the dragon and from the mouth of the Beast and from the mouth of the false Prophet, three foul spirits like frogs ??14 demon-spirits performing miracles, who come out to muster the kings of the whole world for battle on the great Day of almighty God.

They are demon spirits that perform wonders, and they go out to the kings all over the world to muster them for battle on the great Day of God Almighty.