Genesis 34:13-17

13But Jacob’s sons answered Shechem and his father Hamor with deceit, because he had defiled their sister Dinah. 14They said to them, “We cannot do this thing, that is, give our sister to a 1man who is uncircumcised, for that would be a disgrace to us. 15Only on this condition will we consent to you: if you will become like us, in that every male of you will be circumcised, 16then we will give our daughters to you, and we will take your daughters for ourselves, and we will live with you and become one people. 17But if you do not listen to us to be circumcised, then we will take our daughter and go.”