Judges 20:39

And the men of Israel turn in battle, and Benjamin hath begun to smite the wounded among the men of Israel, about thirty men, for they said, 'Surely they are utterly smitten before us, as at the first battle;

Judges 20:32

And the sons of Benjamin say, 'They are smitten before us as at the beginning;' but the sons of Israel said, 'Let us flee, and draw them away out of the city, unto the highways.'

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Summary

And when the men of Israel retired in the battle, Benjamin began to smite and kill of the men of Israel about thirty persons: for they said, Surely they are smitten down before us, as in the first battle.

And when

Bible References

And when

Judges 20:31
And the sons of Benjamin come out to meet the people; they have been drawn away out of the city, and begin to smite some of the people -- wounded as time by time, in the highways (of which one is going up to Beth-El, and the other to Gibeah in the field), are about thirty men of Israel.