Judges 20:3

20:3 The Benjaminites heard that the Israelites had gone up to Mizpah. Then the Israelites said, “Explain how this wicked thing happened!”

Judges 20:12

20:12 The tribes of Israel sent men throughout the tribe ¹  of Benjamin, saying, “How could such a wicked thing take place? ² 

¹ tc The MT reads the plural, but surely the singular (which is supported by the LXX and Vulgate) is preferable here.

² tn Heb “What is this wicked thing which happened among you?”