וְהָיָ֛ה כְּאָבָ֥ק דַּ֖ק הֲמ֣וֹן זָרָ֑יִךְ וּכְמֹ֤ץ עֹבֵר֙ הֲמ֣וֹן עָֽרִיצִ֔ים וְהָיָ֖ה לְפֶ֥תַע פִּתְאֹֽם׃
But the multitude of thy foes shall be like small dust, And the multitude of the terrible ones as chaff that passeth away; Yea, it shall be at an instant suddenly—
Read halakhic rulings (Jewish law) on Isaiah 29:5: and classical halakhic sources.