How can you prove, beyond reasonable doubt, that the "Lord" (if he was
the "Lord") spoke and that, if so, it was recorded and later translated accurately? We know that there are parts of the texts which are open to interpretation and are question marks.
You can't. No one can. We weren't there. There weren't cameras.
It's all just say-so. How can anyone build their life on 'say-so'?
Who chose the scrolls that came to be included in the "Bible"? Do you even know that?