Assuming you could know for sure whether the "Bible" has indeed been produced by that God, and is not just some pretender book. We have quite a few contenders for that title even in our non-counterfactual world after all.
Knowing for sure is not possible: even if there was only a 0.01 chance God wrote it, you'd still want to read it, given the 1) low cost of reading and 2) high potential payoff. Reading the bible would probably also be helpful in establishing authorship.
Assuming you could know for sure whether the "Bible" has indeed been produced by that God, and is not just some pretender book. We have quite a few contenders for that title even in our non-counterfactual world after all.