Genesis 4:2

Later she gave birth to his brother Abel. Now Abel kept flocks, and Cain worked the soil.

(New International Version)

Again, she gave birth to his brother Abel. And Abel was a keeper of flocks, but Cain was a tiller of the ground.

(New American Standard Bible)

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

(King James Version)