you know ,I won't blame you for your obsession with such issue (does the Quran validate the bible) , neither for skipping my quranic quotations related to the topic,in previous posts .....
I only blame you for narrowing the meaning of textual truthfulness to mere the Question of Transmission....
1- Does proving a written work as transmitted perfectly through the ages ,validate its entire content as facts ?
I don't think so...
I didn't come to accept the Bible as reliable and truthful simply by studying manuscripts and textual transmission. I came to realise that the Bible is a book of prophecy and could only have come from God who knows what the future will bring. Approximately one third of the Bible is prophecy. And these never fail to come true. Often the Bible foretells what will happen with great nations and world powers that dominate the international scene centuries in advance. Just to cite one example, it was foretold that the Jews would be exiled to Babylon but that they would afterwards be liberated by Cyrus the Persian king. Cyrus is named in prophecy some 200 years before he acted as liberator -- so even before he was born. The prophecy stated that Babylon's waters would be dried up (Isaiah 44:27-28). And that is exactly what Cyrus did. History records that he diverted the waters of the river Euphrates by digging a channel. Then when the waters were gone his soldiers invaded the city of Babylon by marching through the muddy river bed.
There are prophecies that have come true and we have historical records to prove it. There are prophecies that are coming true today and we can witness them unfolding. And there are prophecies still to occur in which we have absolute confidence that God will fulfill his promises.