@tt3: First of all, I was responding to a poster who is (genuinely, I hope) looking for answers.
As for, “All you are “proving” to an OTD person is that the Torah authors(s) had the skills of any good narrative fiction writer” – how and when did this “good narrative fiction writer” (or anyone else) convince ALL OF KLAL YISRAEL to accept the entire Torah to the point of mesirus nefesh? I’m not talking about ???? ?????, but your and my and all yidden’s ancestors following the Torah since… WHEN?