So what is the earliest text of the Hebrew Scriptures that we have?
The most common answer that comes to mind is the Dead Sea scrolls (DSS), but recall some brief fragments of text also found in the Tanahk found on a small metalic object in Jerusalem to include a portion of Deuteronomy roughly 900 to 1000 BCE. My source was an episode of "The Naked Archeologist" but featured a professor IRRC from Hebrew University.
Repectfully,
-Theophilus