The Massacre at Shechem
In this chapter, we see the price Jacob pays for not following God's direction to take his family to Bethel, instead choosing to live near an area of evil people. Jacob's daughter went unsupervised into the city which was known for its wickedness and she was raped by Shechem, son of Hamor, the ruler of the area. Hamor went to talk with Jacob and stated that Shechem was in love with Dinah and wanted to marry her.
Jacob strangely shows no outrage toward a man who violated his daugher. But because Shechem had defiled Dinah, her brothers decided unwisely to trick the Canaanites and said this marriage was possible if all of Hamor's people agreed to be circumsized like themselves. Hamor, driven by greed and not by love, convinced his people to be circumsized so they too could find wives in Jacob's family.
While they were all incapacitated by pain form being circumsized, Simeon and Levi killed all the males, including Hamor and Shechem. They took all the women, children and animals.
Jacob finally waking up to his failure at leading his family properly and allowing his sons to sin in vengance, warned that this action would bring trouble down on their household. Simeon and Levis answered back: "Should they have been treated Dina as a prostitute?" The whole story is filled with self-centered actions instead of actions to please God. As a result, eventually the tribes of Simeon and Levi were scattered throughout Israel.