Vows: Rash: The Israelites, to Destroy the Benjamites
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Judges 21:5, 6
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. / And the Israelites grieved for their brothers, the Benjamites, and said, “Today a tribe is cut off from Israel.
Judges 20:21
And the Benjamites came out of Gibeah and cut down 22,000 Israelites on the battlefield that day.