Genesis 34:14-17

They said to them, “We cannot do this thing, to give our sister to one who is uncircumcised, for that would be a disgrace to us. Only on this condition will we consent to you: if you will become like us, in that every male of you be circumcised, then 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. But if you will not listen to us to be circumcised, then we will take our daughter and go.”