וְהָיָ֤ה יְהוָה֙ עִמּ֔וֹ בְּכֹ֥ל אֲשֶׁר־יֵצֵ֖א יַשְׂכִּ֑יל וַיִּמְרֹ֥ד בְּמֶֽלֶךְ־אַשּׁ֖וּר וְלֹ֥א עֲבָדֽוֹ׃
And the LORD was with him: whithersoever he went forth he prospered; and he rebelled against the king of Assyria, and served him not.
Read halakhic rulings (Jewish law) on II Kings 18:7: and classical halakhic sources.