Was Eve really acting against her nature when she ate the forbidden fruit? She was an instinctively curious being. What is unnatural about that? God didn't punish Eve and Adam because they were being unnatural, He punished them because they disobeyed Him. They chose nature over providence. Eve and Adam were actually punished for choosing natural law over God's law. They chose to separate themselves from divine authority. You don't get any more natural than that.