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.
Berean Study Bible (BSB) - Judges 21:5 >The Israelites asked, “Who among all the tribes of Israel did not come to the assembly before the LORD?” For they had taken a solemn oath that anyone who failed to come up before the LORD at Mizpah would surely be put to death.