וַיִּקְבֹּ֨ץ מֶֽלֶךְ־יִשְׂרָאֵ֥ל אֶֽת־הַנְּבִיאִים֮ כְּאַרְבַּ֣ע מֵא֣וֹת אִישׁ֒ וַיֹּ֣אמֶר אֲלֵהֶ֗ם הַאֵלֵ֞ךְ עַל־רָמֹ֥ת גִּלְעָ֛ד לַמִּלְחָמָ֖ה אִם־אֶחְדָּ֑ל וַיֹּאמְר֣וּ עֲלֵ֔ה וְיִתֵּ֥ן אֲדֹנָ֖י בְּיַ֥ד הַמֶּֽלֶךְ׃
Then the king of Israel gathered the prophets together, about four hundred men, and said unto them: ‘Shall I go against Ramoth-gilead to battle, or shall I forbear?’ And they said: ‘Go up; for the LORD will deliver it into the hand of the king.’
Read halakhic rulings (Jewish law) on I Kings 22:6: and classical halakhic sources.