Genesis 4:4-8

VIN(i) 4 But Abel brought fat portions from some of the firstborn (firstlings) of his flock. the LORD looked with favor on Abel and his offering. 5 but to Cain and to his offering he did not look with favor. And Cain became very angry, and his face fell. 6 the LORD said to Cain: "Why are you angry? Why is your face downcast? 7 "If you do what is right, will not your attitude improve? But if you do not do what is right, sin is crouching at your door. It desires to have you, but you must master it." 8 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.