Seeing as the bible was created during a time where humans were still trying to find out their purpose, and what is moral and immoral, of course you would say that the bible gave morals. However, I believe that without the bible, humans eventually would think and see why it's beneficial for the whole population to have standards and rules, as it's in our nature to survive and help our species survive.
Yeah sure ... If what they 'believed' to be moral is what made it moral. Thats not the case. What people believe to be moral is irrelevant. Nature sorts out the ones that believe falsely. What it (nature) does is the only thing you can truly base good off of and be right about it in the end ... Because it always wins in the end.