'Forehead' in the Bible

And he requires everyone—small and great, rich and poor, free and slave—to be given a mark on his right hand or on his forehead,

And a third angel followed them and spoke with a loud voice: “If anyone worships the beast and his image and receives a mark on his forehead or on his hand,

On her forehead a cryptic name was written: BABYLON THE GREATTHE MOTHER OF PROSTITUTESAND OF THE VILE THINGS OF THE EARTH.