If someone believes in religious mumbo jumbo and takes an old book as evidence, they have probably given up (or never started) to accept science as explainer of our world. They see science as either confirming how utterly brilliant the creator was by magicing all the wonderous stuff on our planet, or thw work of the devil by undermining faith.
So in short, they have already made up their minds, and any scoentific discovery, if they accept it at all, will just be used to confirm their beluefs rather than undermine it.