When Jacob's sons returned from the fields they were very upset when they heard the news and became extremely angry because Shechem had done something outrageous in Israel by having sex with Jacob's daughter—something that should never be done.
During the time he was living there, Reuben went and slept with Bilhah, his father's concubine, and Israel found out about it. These were the twelve sons of Jacob:
Her brother Absalom found her and asked, “Has brother Amnon been with you? Keep quiet for the moment, my sister. He's your brother. Don't be so upset about it.” So Tamar lived as a ruined and abandoned woman in her brother Absalom's home.
So why have you treated with contempt my sacrifices and offerings that I have ordered for my place of worship? You honor your sons more than me by fattening yourselves with the best parts of all the offerings from my people Israel.