But the bible has. It demonstrably has. We have old bibles to prove that not just linguistic quirks changed, but the actual content of the books has changed. Look, I'm sorry, but at this point this comes down to nothing more than a denial of reality. If God gave Moses ALL of His plan of Salvation, then the problem has clearly occurred during one of the many, many, many, maaaaany transcriptions (performed by hand by people who were not experts). But to deny that the bible we have today is different from the bible of centuries past is not just wrong, it is denial. I mean, you can find substantial differences not just between manuscripts of now and the past, you can find substantial differences between different bibles published today!
If this is "non-negotiable" to you, then all you're doing is demonstrating that you don't know the first thing about your holy book or its history, and have no interest in learning.