וַיְהִי֮ בַּלַּ֣יְלָה הַהוּא֒ וַיֵּצֵ֣א ׀ מַלְאַ֣ךְ יְהוָ֗ה וַיַּךְ֙ בְּמַחֲנֵ֣ה אַשּׁ֔וּר מֵאָ֛ה שְׁמוֹנִ֥ים וַחֲמִשָּׁ֖ה אָ֑לֶף וַיַּשְׁכִּ֣ימוּ בַבֹּ֔קֶר וְהִנֵּ֥ה כֻלָּ֖ם פְּגָרִ֥ים מֵתִֽים׃
I stało się tejże nocy, że wyszedł anioł Wiekuistego i poraził w obozie asyryjskim sto ośmdziesiąt i pięć tysięcy. A gdy wstali zrana, a oto wszyscy trupy martwe.
Rashi on II Kings
And it was that night. When Sancheiriv returned from [battling] with Cush, and he came as far as Nov, which was near Yerusholayim.29Although his astrologers told him that he would be successful in conquering Yerusholayim if he were to attack it on that very day, Sancheiriv in his arrogance decided to camp overnight in Nov and wait for the following day. This ultimately led to his downfall. See Maseches Sanhedrin 95a. Dovid who was Chizkiyohu's ancestor, incurred guilt by causing the deaths of the kohanim of Nov, and it was therefore decreed that his descendants would be liable for punishment for many years. This was the last day of the decree, as stated in Yeshayohu 10:32, “Yet today he will stand in Nov.”