NET
17 Thus no one was allowed to buy or sell things unless he bore the mark of the beast—that is, his name or his number.
Darby
17 and that no one should be able to buy or sell save he that had the mark, the name of the beast, or the number of its name.
KJV
17 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.