Genesis 34:2, 24-25

But when the local prince, Shechem son of Hamor the Hivite, saw Dinah, he seized her and raped her.

So all the men in the town council agreed with Hamor and Shechem, and every male in the town was circumcised. But three days later, when their wounds were still sore, two of Jacob’s sons, Simeon and Levi, who were Dinah’s full brothers, took their swords and entered the town without opposition. Then they slaughtered every male there