גַּם־ה֣וּא הָלַ֔ךְ בְּדַרְכֵ֖י בֵּ֣ית אַחְאָ֑ב כִּ֥י אִמּ֛וֹ הָיְתָ֥ה יֽוֹעַצְתּ֖וֹ לְהַרְשִֽׁיעַ׃
He also walked in the ways of the house of Ahab; for his mother was his counsellor to do wickedly.
Read midrashic interpretation of II Chronicles 22:3: and classical rabbinic exegesis.