Judges 21 5
“Which of all the tribes of Israel didn't attend the assembly we held before the Lord?” they asked. For they had sworn a sacred oath that anyone who did not come before the Lord at Mizpah would without exception be executed.
Compare with other 3 random translations
ERV Judges 21:5Then the Israelites said, “Are there any tribes of Israel who did not come here to meet with us before the Lord?” They asked this question because they had made a serious promise. They had promised that anyone who did not come together with the other tribes at the city of Mizpah would be killed.
NCV Judges 21:5Then the Israelites asked, “Did any tribe of Israel not come here to meet with us in the presence of the Lord?” They asked this question because they had sworn that anyone who did not meet with them at Mizpah would be killed.
AMP Judges 21:5Then the sons of Israel said, “Which one from all the tribes of Israel did not come up in the assembly to the Lord?” For they had taken a great oath concerning him who did not come up to the Lord at Mizpah, saying, “He shall certainly be put to death.”