Thematic Bible: Of cain slaying abel

but to Cain and to his offering he did not look with favor. And Cain became very angry, and his face fell. And Yahweh said to Cain, "Why are you angry, and why is your face fallen? If you do well {will I not accept you}? But if you do not do well, sin is crouching at the door. And its desire [is] for you, but you must rule over it." read more.
Then Cain said to his brother Abel, ["Let us go out into the field."] And when they were in the field, Cain rose up against his brother Abel and killed him.