וַיִּשְׁלַ֥ח אַחְאָ֖ב בְּכָל־בְּנֵ֣י יִשְׂרָאֵ֑ל וַיִּקְבֹּ֥ץ אֶת־הַנְּבִיאִ֖ים אֶל־הַ֥ר הַכַּרְמֶֽל׃
And Ahab sent unto all the children of Israel, and gathered the prophets together unto mount Carmel.
Read kabbalistic (mystical) interpretation of I Kings 18:20: and classical mystical sources.