Genesis 34:14-16

14They said to them, “We can’t do such a thing; we can’t give our sister to a man who is not circumcised. That would be a disgrace to us. 15We will enter into an agreement with you on one condition only: that you become like us by circumcising all your males. 16Then we will give you our daughters and take your daughters for ourselves. We’ll settle among you and become one people with you.