Genesis 34:22

19 And without loss of time the young man did as they said, because he had delight in Jacob's daughter, and he was the noblest of his father's house.

20 Then Hamor and Shechem, his son, went to the meeting-place of their town, and said to the men of the town,

21 It is the desire of these men to be at peace with us; let them then go on living in this country and doing trade here, for the country is wide open before them; let us take their daughters as wives and let us give them our daughters.

22 But these men will make an agreement with us to go on living with us and to become one people, only on the condition that every male among us undergoes circumcision as they have done.

23 Then will not their cattle and their goods and all their beasts be ours? so let us come to an agreement with them so that they may go on living with us.

24 Then all the men of the town gave ear to the words of Hamor and Shechem his son; and every male in the town underwent circumcision.

25 But on the third day after, before the wounds were well, two of the sons of Jacob, Simeon and Levi, Dinah's brothers, took their swords and came into the town by surprise and put all the males to death.