Joan of Arc is well known for claiming to hear voices sent to her by God. The Church chose a different view, saying they were demonic in origin. Some of her friends told her that the voices were just her own commonsense talking to her. Joan's refusal to submit to anyone's version of reality but her own, was one of the main factors that led to her execution. Saint Joan is in a sense a battle for the definition of reality.
By placing faith in her own voices over Church doctrine, Joan becomes an early and unknowing proponent of Protestantism.
Joan is executed in an ideological battle to define spiritual reality.