וְהַבְּרִ֛ית אֲשֶׁר־כָּרַ֥תִּי אִתְּכֶ֖ם לֹ֣א תִשְׁכָּ֑חוּ וְלֹ֥א תִֽירְא֖וּ אֱלֹהִ֥ים אֲחֵרִֽים׃
and the covenant that I have made with you ye shall not forget; neither shall ye fear other gods;
Read halakhic rulings (Jewish law) on II Kings 17:38: and classical halakhic sources.