Genesis 34:13-17

Jacob’s sons answered Shechem and his father with lies, because Shechem had disgraced their sister Dinah. The brothers said to them, “We cannot allow you to marry our sister, because you are not circumcised. That would be a disgrace to us. But we will allow you to marry her if you do this one thing: Every man in your town must be circumcised like us. Then your men can marry our women, and our men can marry your women, and we will live in your land and become one people. If you refuse to be circumcised, we will take Dinah and leave.”