Genesis 34
24 Ref 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 Ref 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.