|The Death of Abel, by Gustave Dore|
Chapter 3 covers the story of Cain and Abel, who were the first sons of Adam and Eve. In a fit of jealousy, Cain killed Abel. Cain was scolded by God, who told Cain that as punishment he would wander the earth for life. (Thus he is interpreted to be the fore-father of the nomadic group Kenites.) Frightened, Cain told God that he, Cain, would be murdered by those who knew his deed. "Then the Lord said to him, 'Not so! If anyone kills Cain, vengeance shall be taken on him sevenfold.'" (Genesis 4:15)* This is why the Kenites, who were a brutal tribe, would kill seven people to avenge one of their own.