Three days later, while they were still in pain, two of Jacob’s sons (Dinah’s brothers Simeon and Levi) took their swords, went into the unsuspecting city, and slaughtered every male.
Jewish Publication Society of America Version (JPS1917) - Genesis 34:25 >And it came to pass on the third day, when they were in pain, that two of the sons of Jacob, Simeon and Levi, Dinah's brethren, took each man his sword, and came upon the city unawares, and slew all the males.