גַּם־יְהוּדָ֕ה לֹ֣א שָׁמַ֔ר אֶת־מִצְוֺ֖ת יְהוָ֣ה אֱלֹהֵיהֶ֑ם וַיֵּ֣לְכ֔וּ בְּחֻקּ֥וֹת יִשְׂרָאֵ֖ל אֲשֶׁ֥ר עָשֽׂוּ׃
Also Judah kept not the commandments of the LORD their God, but walked in the statutes of Israel which they practised.
Read halakhic rulings (Jewish law) on II Kings 17:19: and classical halakhic sources.