“16 And he causeth all, both small and great, rich and poor, free and bond, to receive a mark in their right hand, or in their foreheads:” KJV
https://www.biblegateway.com/passage/?search=Revelation+13&version=KJV
~~~~~~~~~~~~~~
Maybe, but there's a translation of the Hebrew which includes 'arm'.
יד – arm, hand, forehand – Hebrew conjugation tables (pealim.com)
This is interesting because John - the author of Revelatioin - would have written this in his native language, which was Hebrew - not Greek which most translators used.