Genesis 34:13-17

13The sons of Jacob answered Shechem and his father Hamor deceitfully, because he had defiled their sister Dinah. 14They 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. 15Only on this condition will we agree with you—that you will become as we are by every male among you being circumcised. 16Then we will give our daughters to you, and we will take your daughters to ourselves, and we will dwell with you and become one people. 17But if you will not listen to us and be circumcised, then we will take our daughter, and we will be gone.”