Genesis 34:25

34:25 It happened on the third day, when they were sore, that two of Jacob's sons, Simeon and Levi, Dinah's brothers, each took his sword, came upon the unsuspecting city, and killed all the males.
-World English Bible

Other Translation

34:25 And it came to pass on the third day, when they were sore, that two of the sons of Jacob, Simeon and Levi, Dinah's brethren, took each man his sword, and came upon the city boldly, and slew all the males.
-King James Version