Basically what is required is a good knowledge of the ancient language, whether that’s Hebrew, Aramaic, Greek, Latin, or Coptic; a very good knowledge of the script; and a really good knowledge of the medium as well. A forger has to know how a piece was produced, like the chemical composition of the ink and other technical aspects. But if someone knows the language quite well and knows the script and has access to a scanning electron microscope with extended depth-of-field determinations of the chemical composition of the patina and the inks, it’s not all that difficult.Fortunately most people who go to the effort to learn all that don't want to make forgeries. But all it takes is one.
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