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The term "celt" came about from what was very probably a copyist's error in many medieval manuscript copies of Job 19:24 in the Latin Vulgate Bible, which became enshrined in the authoritative Sixto-Clementine printed edition of 1592; however the Codex Amiatinus, for example, does not contain the mistake. While this is now considered to be the case by most scholars, some are still prepared to consider the existence of a real Latin word.
A "celt" was thus wrongly assumed to be a type of ancient chisel. Early eighteenth century antiquarians, such as Lorenz Beger, then adopted the word for the stone and bronze tools they were finding at prehistoric sites; the OED suggests that the imaginary etymological connection with the Celts may have assisted its passage into common use.