Anyway, I choose not to ignore his claim, and to pursue its veracity or fraudulent nature to the end.
For your sake, I hope that you don't spend too much time on it. There are so many topics -- and sources -- that are actually worthy of your time.
In this case, your source's claims are absolutely untenable. He claims to have a text that doesn't exist. He claims to be able to translate a language that he doesn't understand, and he is making historical and linguistic arguments that are anachronistic and illogical.
His lies are not difficult to expose. It's not like he is making a complex argument and leaving out a little tidbit that compromises everything. Your source is fabricating the "facts" and making up explanations to support them.
Again, even reading wikipedia and getting the most basic definitions of some words would help you a great deal.
And unfortunately, you are gullible. That isn't a criticism, but an observation. Gullibility isn't entirely negative, because it is possible that you choose something worthwhile instead of a rip off.
You have bought a lemon, the first car that the used car salesman showed to you because he gave you his personal guarantee. Your friend - who you brought with you to make sure you get a good deal - begs you not to believe everything he says. But it's too late - you're in love with the rusty old thing. Paid in cash twice the amount it was worth. Turns out the car didn't have wheels, an engine, or even an interior. It was just a rust piece of junk that you can't sell for scrap. Now you have no money and no car. Does it feel good now, sitting on the side of the road pretending like you're moving?
Just in case anyone missed this:
1) You immediately accepted what your source told you without verifying that it was true.
2) You defend this position even though everyone is telling you on a very basic level that your source is not only wrong, but intentionally deceptive
3) The car that you see is not the actual thing, but the image that the salesman (your source) paints for you. In reality, it's junk.
4) Paid in cash = unrestrained commitment to the lie that the source's argument has merit
5) No money and no car = you don't have the intellectual integrity to "buy" anything else
6) Pretending like you're moving = the argument doesn't work. It has no foundation - no wheels - so it has no chance of going anywhere.