Judges 20:3
“(Now the children of Benjamin heard that the children of Israel were gone up to Mizpeh.) Then said the children of Israel, Tell us, how was this wickedness?”
Then all the children of Israel went out, and the congregation was gathered together as one man, from Dan even to Beer–sheba, with the land of Gilead, unto the Lord in Mizpeh.
And the chief 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 that drew sword.
(Now the children of Benjamin heard that the children of Israel were gone up to Mizpeh.) Then said the children of Israel, Tell us, how was this wickedness?
And the Levite, the husband of the woman that was slain, answered and said, I came into Gibeah that belongeth to Benjamin, I and my concubine, to lodge.
And the men of Gibeah rose against me, and beset the house round about upon me by night, and thought to have slain me: and my concubine have they forced, that she is dead.
Counter-Arguments
The strongest case that this verse does not belong in this theme.

Related Verses
“Now therefore deliver us the men, the children of Belial, which are in Gibeah, that we may put them to death, and put away evil from Israel. But the children of Benjamin would not hearken to the voice of their brethren the children of Israel:”
“Then all the children of Israel went out, and the congregation was gathered together as one man, from Dan even to Beer–sheba, with the land of Gilead, unto the Lord in Mizpeh.”
“And the men of Israel went out to battle against Benjamin; and the men of Israel put themselves in array to fight against them at Gibeah.”
“But the children of Benjamin gathered themselves together out of the cities unto Gibeah, to go out to battle against the children of Israel.”
“(And the children of Israel went up and wept before the Lord until even, and asked counsel of the Lord, saying, Shall I go up again to battle against the children of Benjamin my brother? And the Lord said, Go up against him.)”