The story of Cain and Abel is a biblical tale from the Book of Genesis. Cain, the firstborn son of Adam and Eve, was a farmer, while Abel was a shepherd. Both brothers made offerings to God, but God favored Abel's sacrifice over Cain's, leading to Cain's jealousy and anger. In a fit of rage, Cain killed Abel, committing the first murder. As punishment, God banished Cain, marking him to prevent others from killing him. This story explores themes of jealousy, sin, and the consequences of one's actions, highlighting the moral lessons within the Judeo-Christian tradition.