וַיֹּאמֶר֩ אֵלִיָּ֨הוּ לָהֶ֜ם תִּפְשׂ֣וּ ׀ אֶת־נְבִיאֵ֣י הַבַּ֗עַל אִ֛ישׁ אַל־יִמָּלֵ֥ט מֵהֶ֖ם וַֽיִּתְפְּשׂ֑וּם וַיּוֹרִדֵ֤ם אֵלִיָּ֙הוּ֙ אֶל־נַ֣חַל קִישׁ֔וֹן וַיִּשְׁחָטֵ֖ם שָֽׁם׃
Elija sprach zu ihnen: Ergreifet die Propheten des Baal, dass keiner von ihnen entrinne. Sie ergriffen sie; da ließ Elija sie hinabführen an den Bach Kison und schlachtete sie daselbst.
From David to Destruction
Eliyahu HaNavi scores a great victory for Hashem at Har HaCarmel (Melachim I 18). He capitalizes on this great victory by encouraging and leading the nation (see Melachim I 18:40 with Radak) to execute the four hundred Ba’al missionaries who are imported by Izevel to attract the Bnei Yisrael to Ba’al worship. TABC students, though, wondered why Eliyahu HaNavi does not also kill the prime instigators of Avodah Zarah in Malchut Yisrael, Achav and Izevel.