There are no real originals of the dead sea scrolls or pretty much any portion of the Bible. Even the oldest fragments are copies or even considered outright forgeries. Over time, these "Bible books" were often copied and modified to fit a particular narrative at the time with originals, sometimes even intentionally, destroyed. Like the Jews cannot prove they are Jewish because the original documents of lineage have long been gone, the Christians cannot prove they are original Christians because both the documents and their interpretative texts are either missing or conflicting.
Even what we currently understand as the 'modern Bible' (a collection of Christian books, stories and prophecy, most of which were removed from canon and have gone missing after the Nicene convention) is largely organized around the 1600's King James Version, which is not necessarily chronological or ideologically organized in a single story, and even KJV has changed significantly since.
The unerring word of god has changed meaning a ton over time.