In the biblical Book of Genesis, Cain and Abel are the first two sons of Adam and Eve. Cain, the firstborn, was a farmer, and his brother Abel was a shepherd. The brothers made sacrifices to God, but God favored Abel's sacrifice instead of Cain's.

Why did Cain kill his brother?

According to the standard reading of the biblical Cain and Abel story, Cain killed Abel after his sacrifice was rejected by God. He was so overcome by jealousy that one day he jumped on him and killed him in a murderous rage. Abel is pure right- eousness; Cain pure evil.

What does the story of Cain and Abel teach us?

Cain offered fruit and grain, and Abel offered fresh meat from his flock. ... God then tells Cain that it is up to him what happens. If he changes, he will be able to control his anger and not sin. If on the other hand he does not, his anger will overcome him and he will commit a terrible crime.