I Kings 22:15 Halakhah

וַיָּבוֹא֮ אֶל־הַמֶּלֶךְ֒ וַיֹּ֨אמֶר הַמֶּ֜לֶךְ אֵלָ֗יו מִיכָ֙יְהוּ֙ הֲנֵלֵ֞ךְ אֶל־רָמֹ֥ת גִּלְעָ֛ד לַמִּלְחָמָ֖ה אִם־נֶחְדָּ֑ל וַיֹּ֤אמֶר אֵלָיו֙ עֲלֵ֣ה וְהַצְלַ֔ח וְנָתַ֥ן יְהוָ֖ה בְּיַ֥ד הַמֶּֽלֶךְ׃

And when he was come to the king, the king said unto him: ‘Micaiah, shall we go to Ramoth-gilead to battle, or shall we forbear?’ And he answered him: ‘Go up, and prosper; and the LORD will deliver it into the hand of the king.’

Read halakhic rulings (Jewish law) on I Kings 22:15: and classical halakhic sources.