Genesis 34:13-17

13Because their sister Dinah had been defiled, Jacob’s sons replied deceitfully as they spoke to Shechem and his father Hamor. 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. 17But if you will not agree to be circumcised, we’ll take our sister and go.”