Judges 21:6
“And the children of Israel repented them for Benjamin their brother, and said, There is one tribe cut off from Israel this day.”
And it came to pass on the morrow, that the people rose early, and built there an altar, and offered burnt offerings and peace offerings.
And the children of Israel said, Who is there among all the tribes of Israel that came not up with the congregation unto the Lord? For they had made a great oath concerning him that came not up to the Lord to Mizpeh, saying, He shall surely be put to death.
And the children of Israel repented them for Benjamin their brother, and said, There is one tribe cut off from Israel this day.
How shall we do for wives for them that remain, seeing we have sworn by the Lord that we will not give them of our daughters to wives?
And they said, What one is there of the tribes of Israel that came not up to Mizpeh to the Lord? And, behold, there came none to the camp from Jabesh–gilead to the assembly.
Counter-Arguments
The strongest case that this verse does not belong in this theme.

Cross-References
“How shall I give thee up, Ephraim? how shall I deliver thee, Israel? how shall I make thee as Admah? how shall I set thee as Zeboim? mine heart is turned within me, my repentings are kindled together.”
“And it came to pass, when he saw her, that he rent his clothes, and said, Alas, my daughter! thou hast brought me very low, and thou art one of them that trouble me: for I have opened my mouth unto the Lord, and I cannot go back.”
“And the people repented them for Benjamin, because that the Lord had made a breach in the tribes of Israel.”
“And when he was come near, he beheld the city, and wept over it,”
“(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.)”