Let me tell you about it.
After the Jews returned from Babylon, about 400 years before Christ, Ezra commenced making the Bible. You will find an account of this in the Bible.
We know that Genesis was written after the Captivity—because it was from the Babylonians that the Jews got the story of the creation—of Adam and Eve, of the Garden—of the serpent, and the tree of life—of the flood—and from them they learned about the Sabbath.
You find nothing about that holy day in Judges, Joshua, Samuel, Kings or Chronicles—nothing in Job, the Psalms, in Esther, Solomon's Song or Ecclesiastes. Only in books written by Ezra after the return from Babylon.
When Ezra finished the inspired book, he placed it in the temple. It was written on the skins of beasts, and, so far as we know, there was but one.
What became of this Bible?
Jerusalem was taken by Titus about 70 years after Christ. The temple was destroyed and, at the request of Josephus, the Holy Bible was sent to Vespasian the Emperor, at Rome.
And this Holy Bible has never been seen or heard of since. So much for that.
Then there was a copy, or rather a translation, called the Septuagint.
How was that made?