Reference

Genesis 4:2

And she again bare his brother Abel. And Abel was a keeper of sheep, but Cain was a tiller of the ground.
1

And Adam knew Eve his wife; and she conceived, and bare Cain, and said, I have gotten a man from the Lord.

2

And she again bare his brother Abel. And Abel was a keeper of sheep, but Cain was a tiller of the ground.

3

And in process of time it came to pass, that Cain brought of the fruit of the ground an offering unto the Lord.

4

And Abel, he also brought of the firstlings of his flock and of the fat thereof. And the Lord had respect unto Abel and to his offering: