Revelation 13:16-18 And he causes all, small and great, rich and poor, free and bond, that they should receive marks on their right hand, or on their foreheads,

CAB⁽ⁱ⁾ ¹⁶ And he causes all, small and great, rich and poor, free and bond, that they should receive marks on their right hand, or on their foreheads, ¹⁷ and that no one may buy or sell except he that has the mark, the name of the beast, or the number of his name. ¹⁸ Here is wisdom. Let him that has understanding calculate the number of the beast, for it is the number of man--his number is 666.