Saul’s three sins (1 Samuel 13-15) correspond to the sins of Adam, Cain, and the sons of God (Genesis 1-6). Like Adam, Saul breaks a command from God; like Cain, he attacks a “brother”; like the sons of God, he allies with an enemy. At each point, there is a variation. Saul doesn’t eat forbidden fruit, but offers a prohibited sacrifice (1 Samuel 13). He doesn’t intermarry with Gentiles but refuses to kill one, Agag, king of the Amalekites (1 Samuel 15).