כֹּ֣ה אָמַ֣ר יְהוָ֡ה לֹא־תַעֲלוּ֩ וְלֹא־תִלָּ֨חֲמ֜וּ עִם־אֲחֵיכֶ֗ם שׁ֚וּבוּ אִ֣ישׁ לְבֵית֔וֹ כִּ֧י מֵֽאִתִּ֛י נִהְיָ֖ה הַדָּבָ֣ר הַזֶּ֑ה וַֽיִּשְׁמְעוּ֙ אֶת־דִּבְרֵ֣י יְהוָ֔ה וַיָּשֻׁ֖בוּ מִלֶּ֥כֶת אֶל־יָרָבְעָֽם׃ (פ)
Thus saith the LORD: Ye shall not go up, nor fight against your brethren; return every man to his house, for this thing is of Me.’ So they hearkened unto the words of the LORD, and returned from going against Jeroboam.
Rashi on II Chronicles
with your brothers Are they not your brothers, the sons of one man?