See, now you've changed what you originally said. You said that the Septuagint was translated by 70 Jewish scholars and then you gave a discussion of Isaiah. I told you that the 70 scholars only did the first 5 books--which would not have included Isaiah.<quoted text>You proved nothing!
You only showed your ignorance.
The Septuagint was translated into Greek from the Hebrew Scriptures and it was read by Greek speaking Jews who did not speak Hebrew and were unable to read the Hebrew Scriptures written in Hebrew.
Now your statement is that the Septuagint was translated into Greek from the Hebrew Scriptures. No mention of the 70 scholars.
Of course the Hebrew was at some time translated into Greek--which is all you now say.