Revelation 13:17

Overview - Revelation 13
1	A beast rises out of the sea with seven heads and ten horns, to whom the dragon gives his power.
11	Another beast comes out of the earth;
14	causes an image to be made of the former beast,
15	and that men should worship it,
16	and receive his mark.

Revelation 13:17  (King James Version)
And that no man might buy or sell, save he that had the mark, or the name of the beast, or the number of his name.