You're right, and JG Eichhorn was a part of that generation of Bible skeptics and critics whose theories are for some reason accepted by modern academia as fact when in reality, they were mostly guesswork. Another example was JC Doderlein, who co-authored the multiple Isaiah's theory with Eichhorn. As was Julius Wellhausen, whose theory I criticized in post 54.
Well I thank you for this thread. Have not fully digested it but will. Just so happened I picked up The Fundamentals just days before your post.:-)
Divine Providence that is!