Tafseer Ibn Kathir of AL ANBIYAA' [40]

بَلْ تَأْتِيهِم بَغْتَةً فَتَبْهَتُهُمْ فَلَا يَسْتَطِيعُونَ رَدَّهَا وَلَا هُمْ يُنظَرُونَ

Rather, it will come to them unexpectedly and bewilder them, and they will not be able to repel it, nor will they be reprieved.