וַיַּתְעֵ֣ב מְאֹ֔ד לָלֶ֖כֶת אַחֲרֵ֣י הַגִּלֻּלִ֑ים כְּכֹל֙ אֲשֶׁ֣ר עָשׂ֣וּ הָאֱמֹרִ֔י אֲשֶׁר֙ הוֹרִ֣ישׁ יְהוָ֔ה מִפְּנֵ֖י בְּנֵ֥י יִשְׂרָאֵֽל׃ (ס)
And he did very abominably in following idols, according to all that the Amorites did, whom the LORD cast out before the children of Israel.
Read halakhic rulings (Jewish law) on I Kings 21:26: and classical halakhic sources.