וְהוּא֙ לֹא־כֵ֣ן יְדַמֶּ֔ה וּלְבָב֖וֹ לֹא־כֵ֣ן יַחְשֹׁ֑ב כִּ֚י לְהַשְׁמִ֣יד בִּלְבָב֔וֹ וּלְהַכְרִ֥ית גּוֹיִ֖ם לֹ֥א מְעָֽט׃
Howbeit he meaneth not so, Neither doth his heart think so; But it is in his heart to destroy, And to cut off nations not a few.
Read halakhic rulings (Jewish law) on Isaiah 10:7: and classical halakhic sources.