Genesis 34:21-24

These men are peaceable with us; therefore let them dwell in the land, and trade therein; for, behold, the land is large enough for them; let us take their daughters to us for wives, and let us give them our daughters. Only on this condition will the men consent unto us to dwell with us, to become one people, if every male among us be circumcised, as they are circumcised. Shall not their cattle and their substance and all their beasts be ours? only let us consent unto them, and they will dwell with us. And unto Hamor and unto Shechem his son hearkened all that went out of the gate of his city; and every male was circumcised, all that went out of the gate of his city.