16 And it makes everyone — small and great, rich and poor, free and slave — to receive a mark on his right hand or on his forehead,  *17 so that no one can buy or sell unless he has the mark: the beast’s name or the number of its name.

18 This calls for wisdom:  *,* Let the one who has understanding calculate  * the number of the beast, because it is the number of a person. Its number is 666.  *