In theory we all have free will and can choose to worship god or not. But without at least some reasonably convincing evidence to prove the authenticity of any of the many holy texts, we haven't been given all the facts. To have complete freedom over any choice, you need to know definitively what the choices are. True free will would be if god unambiguously laid down what he wanted done (the bible is ambiguous due to the many contradictory texts, all claiming their own authenticity equally). The need for faith (which seems to basically mean "beleiving even though you can't be sure") devalues free will completely, as you cannot be 100% sure what choices you are actually making. You have the free will to accept the bible, but do not ever really know if that means accepting god's holy writings, or an ancient storybook written by man. God should have left something solid if he wanted us to have any real, intelligent freedom to choose whether or not to follow what he says, or rebel.