Abstract
This paper argues that, in its pre-Biblical version (pre-J), the Cain and Abel story principally dealt with tensions distinctive for dry-farming families identifying the social structure as their main cause. The social structure was problematic because it involved two important imbalances, one between the spouses and one between the children. Pre-J offers a novel solution to problems caused by these interfamilial imbalances: rather than accepting their pre-established social roles, people should develop a merit-based social structure. This is why Yahweh says that acceptance and honour are in doing what is right. Focusing on a pre-J narrative in this way and situating the story within the broader motive of sibling rivalry, solve three puzzles: Yahweh’s preference (God challenges unjust social institutions), Cain’s reactions (he is angry because his expectations were unmet and depressed because he thought that this was his failure), and Yahweh’s final forgiveness to Cain (the conflict was not due to Cain’s wicked character).