Genesis 4:3-5
Genesis 4: 3 to 5
3 And in process of time it came to pass, that Cain brought of the fruit of the ground an offering to the LORD.
4 And Abel, he also brought of the firstborn of his flock and of the fat thereof. And the LORD had respect to Abel and to his offering:
5 But to Cain and to his offering he had not respect. And Cain was very wroth, and his countenance fell.