Revelation 13:16-17
Read Revelation 13 in full →16And he causes all, athe small and the great, and the rich and the poor, and the free men and the slaves, that they 1be given a bmark on their right hand or on their forehead, 17and that no one will be able to buy or to sell, except the one who has the amark, either bthe name of the beast or cthe number of his name.