וַיַּעֲבֹ֤ר יוֹרָם֙ צָעִ֔ירָה וְכָל־הָרֶ֖כֶב עִמּ֑וֹ וַֽיְהִי־ה֞וּא קָ֣ם לַ֗יְלָה וַיַּכֶּ֨ה אֶת־אֱד֜וֹם הַסֹּבֵ֤יב אֵלָיו֙ וְאֵת֙ שָׂרֵ֣י הָרֶ֔כֶב וַיָּ֥נָס הָעָ֖ם לְאֹהָלָֽיו׃
Then Joram passed over to Zair, and all his chariots with him; and he rose up by night, and smote the Edomites that compassed him about, and the captains of the chariots; and the people fled to their tents.
Read midrashic interpretation of II Kings 8:21: and classical rabbinic exegesis.