וַתִּכּ֖וֹן הָעֲבוֹדָ֑ה וַיַּֽעַמְד֨וּ הַכֹּהֲנִ֧ים עַל־עָמְדָ֛ם וְהַלְוִיִּ֥ם עַל־מַחְלְקוֹתָ֖ם כְּמִצְוַ֥ת הַמֶּֽלֶךְ׃
So the service was prepared, and the priests stood in their place, and the Levites by their courses, according to the king’s commandment.
Read midrashic interpretation of II Chronicles 35:10: and classical rabbinic exegesis.