My understanding is that scribes were very careful in copying text from one scroll to another and that this was done from generation to generation throughout history. I am so thankful we have what we have today so we can read and comprehend what God wanted us to understand. God is the true Author of all Scripture and He called on faithful men to write what He told them to write.HeRoseFromTheDead said:The word Masoretic is derived from the word masorah, which means tradition. The original Hebrew text was changed in numerous places to accommodate this tradition. The LXX isn't perfect, but it is a snapshot of the original Hebrew text in many places.
I love Jeremiah 36 because it gives us and example of how Scripture was written --- God spoke to Jeremiah ... Jeremiah spoke to Baruch ... Baruch wrote it down.