This is an absurd answer. You can certainly apply Jungian archetypes to the story of Cain and Abel (or any story for that matter) even if the story was before Jung because a particular way of looking at the world can be used across time. An acceptable response to my original prompt would be to apply a Jungian worldview to the story and Cain and Abel and identify the archetype for each character. It does not matter that Carl Jung was born after the story.