The Romans - 30:43
So devote yourself to the true religion before a Day comes from Allah which cannot be reversed. On that Day they will be shocked.
Related:
Council/42:47
Answer your Lord before the Day comes from Allah which cannot be turned back. On that Day there will be for you neither a refuge nor a protector.
Prophet Hud/11:8
"If We delay the torment from them for a certain period, they will say: "What is holding it back?"Indeed, the Day when it comes to them, it will not be withheld from them, and what they mock at will encompass them."
The Romans/30:43
So devote yourself to the true religion before a Day comes from Allah which cannot be reversed. On that Day they will be shocked.
The Ways of Ascent/70:1
An inquirer asked about the torment to come.
The Ways of Ascent/70:2
There is none to ward it off from the disbelievers.
The Prophets/21:39
If only those who disbelieve knew the moment when they will not be able to ward off the Fire from their faces and their backs, nor will they be helped.
The Prophets/21:40
Indeed, it will come upon them suddenly and will overwhelm them. They will not be able to turn it back, nor will they be given a time limit.