The Old Testament can only be understand because of ORAL TRADITION of the Jews. Without ORAL T…RADITION most can’t even understand what the Old Testament even says. This is because Hebrew has no vowels and for us to understand it we rely on Oral Tradition to put the vowels in place for us to help us understand the meanings of the verses. The Oral Tradition protected God’s word and has now been placed into the Written Scriptures to help us understand. In fact, 99% of the Christian Bible is dependent on Oral Tradition.
It wasn’t until the middle ages that the Masoretic Text came along and it was recently compared to the Dead Sea Scrolls in which they agree with each other.