וַיָּבֹאוּ֩ מִנֶּ֨גֶד לַגִּבְעָ֜ה עֲשֶׂרֶת֩ אֲלָפִ֨ים אִ֤ישׁ בָּחוּר֙ מִכָּל־יִשְׂרָאֵ֔ל וְהַמִּלְחָמָ֖ה כָּבֵ֑דָה וְהֵם֙ לֹ֣א יָדְע֔וּ כִּֽי־נֹגַ֥עַת עֲלֵיהֶ֖ם הָרָעָֽה׃ (פ)
And there came over against Gibeah ten thousand chosen men out of all Israel, and the battle was sore; but they knew not that evil was close upon them.
Read midrashic interpretation of Judges 20:34: and classical rabbinic exegesis.