“Right, a coincidence with 100 percent congruence.”
You can play the Sophist all you like, but the fact is Jerome understood the Jewish system, and so his opinion was vastly greater than simply lacking a copy in Hebrew. If he thought he had a copy of something that the Jews accepted as scripture, though not in Hebrew, he probably would have used it. Josephus and the Jews essentially give the same opinion as he does, and that’s the real 100 percent congruence.
Last I checked the Septuagint was written by Jews...
Again, the division is a linguistic division between the hebrew and the greek and Jerome considered hebrew originals to be more superior than the Greek.