They are actually equally likely, whether that is your only two choices or not. To definitely exclude one possibility without definite proof is a narrow-minded approach, with all due respect.
Whats more likely? That a loving God inspired all of his people in only one book, and the rest are deceived? Or that its all man made?
“To definitely exclude one possibility without definite proof is a narrow-minded approach, with all due respect.”
It’s best to exclude all explanations when no proof exists, with all due respect.