Old Testament was lost
What Hebrews and Jews had as their Scripture was lost after they were taken captive. They found a book in the walls of the old Temple and accepted it as the lost Scripture.
2 Kings 22:8 - And Hilkiah the high priest said unto Shaphan the scribe, I have found the book of the law in the house of the LORD.
2 Chronicles 34:14 - And when they brought out the money that was brought into the house of the LORD, Hilkiah the priest found a book of the law of the LORD given by Moses.15And Hilkiah answered and said to Shaphan the scribe, I have found the book of the law in the house of the LORD. And Hilkiah delivered the book to Shaphan.
The King James Version, (Cambridge: Cambridge) 1769.