Genesis 4
4 Ref And Abel, he also brought of the firstlings of his flock and of the fat thereof. And Jehovah had respect unto Abel and to his offering:
5 Ref but unto Cain and to his offering he had not respect. And Cain was very wroth, and his countenance fell.
6 Ref And Jehovah said unto Cain, Why art thou wroth? and why is thy countenance fallen?