Genesis 4:4-6 New Revised Standard Version, Anglicised (NRSVA)
4 and Abel for his part brought of the firstlings of his flock, their fat portions. And the Lord had regard for Abel and his offering, 5 but for Cain and his offering he had no regard. So Cain was very angry, and his countenance fell. 6 The Lord said to Cain, ‘Why are you angry, and why has your countenance fallen?