Judges 20:1

1Then all the children of Israel went out, and the congregation was assembled as one man, from Dan even to Beersheba, with the land of Gilead, to the LORD at Mizpah.

2The chiefs of all the people, even of all the tribes of Israel, presented themselves in the assembly of the people of God, four hundred thousand footmen who drew sword.

3(Now the children of Benjamin heard that the children of Israel had gone up to Mizpah.) The children of Israel said, “Tell us, how did this wickedness happen?”