"All appeals to scripture are appeals to interpretations of scripture." -Keith Mathison
Protestants are rebels who became what they hated. They rejected papal authority and became popes of their own little outposts. They traded a Magisterium with at least a plausible claim to infallibility for their own sure fallibility of opinion.What they are left with is the "truth", as Obi-Wan would say "from a certain point of view".