Rabbi Sacks writes that the root of human conflict is actually sibling rivalry: Cain and Abel, Isaac and Ishmael, Jacob and Esau, and now Joseph and his brothers. He compares the sibling rivalry of the Torah to the 3 Abrahamic religions, Judaism, Christianity, and Islam. He reminds us of the early medieval period in Spain, when the religions lived together peacefully. That changed with the blood libels and expulsions later in Europe. Rabbi Sacks continues the analogy into the present, writing of the conflicts in the Middle East right now.