Surah Al-Anbya 21:40

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.

Translation: Saheeh International

Tafsir

Nay but it the Resurrection shall come upon them suddenly dumbfounding them confusing them and they shall not be able to ward it off nor shall they be granted any respite nor shall they be given any extra time to make a repentance or offer an excuse.

Excerpt from Tafsir al-Jalalayn, commentary on 21:40, via Quran.com. The reader has the full commentary and 9 more tafsirs.