Genesis 4
1 Ref The man knew Eve his wife. She conceived, and gave birth to Cain, and said, "I have gotten a man with Yahweh's help."
2 Ref Again she gave birth, to Cain's brother Abel. Abel was a keeper of sheep, but Cain was a tiller of the ground.
3 Ref As time passed, it happened that Cain brought an offering to Yahweh from the fruit of the ground.