8 Then they asked, “Which one of the tribes of Israel failed to assemble before the LORD at Mizpah?” They discovered that no one from Jabesh Gilead had come to the camp for the assembly.

Read Judges 21:8 Using Other Translations

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 Jabeshgilead to the assembly.
And they said, "What one is there of the tribes of Israel that did not come up to the LORD to Mizpah?" And behold, no one had come to the camp from Jabesh-gilead, to the assembly.
So they asked, “Who among the tribes of Israel did not join us at Mizpah when we assembled in the presence of the LORD ?” And they discovered that no one from Jabesh-gilead had attended the assembly.