Genesis 4:5-8
Read Genesis 4 in full →5but afor Cain and for his offering He had no regard. So bCain became very angry, and his countenance fell. 6Then Yahweh said to Cain, “aWhy are you angry? And why has your countenance fallen? 7“aIf you do well, 1will not your countenance be lifted up? bAnd if you do not do well, sin is lying at the door; and its desire is for you, cbut you must rule over it.” 8Then Cain 1spoke to Abel his brother; and it happened when they were in the field, that Cain rose up against Abel his brother and akilled him.