وَيَستَعجِلونَكَ بِالعَذابِ ۚ وَلَولا أَجَلٌ مُسَمًّى لَجاءَهُمُ العَذابُ وَلَيَأتِيَنَّهُم بَغتَةً وَهُم لا يَشعُرونَ

And they urge you to hasten the punishment. And if not for [the decree of] a specified term, punishment would have reached them. But it will surely come to them suddenly while they perceive not.