'Signs' in the Bible

And it works great signs, that it should cause even fire to come down from heaven to the earth before men.

And it deceives those that dwell upon the earth by reason of the signs which it was given to it to work before the beast, saying to those that dwell upon the earth to make an image to the beast, which has the wound of the sword, and lived.

for they are the spirits of demons, doing signs; which go out to the kings of the whole habitable world to gather them together to the war of that great day of God the Almighty.

And the beast was taken, and the false prophet that was with him, who wrought the signs before him by which he deceived them that received the mark of the beast, and those that worship his image. Alive were both cast into the lake of fire which burns with brimstone;