this is already being done :)
no it has nothing to do with the bible, but engineers and grinders (bio-hackers) are already doing RFID and NFC subdermal implants with lots of other cool stuff in the words. check out this forum to see what some are up to: forum.biohack.me/discussions
it's really not scary; people just don't know what the don't know until they know, you know? people still say cell phones give you cancer, we can't know everything right away but we still try innovative things because it's human nature. don't be scared of convenient payments; just watch our for centralization points, in my opinion.
have a nice day!