But when they see it1 approaching, the faces of those who disbelieve will be distressed, and it will be said, "This is that for which you used to call."2
Translation: Saheeh International (English)
1 The punishment of which they were warned.
2 When they challenged their prophets, saying, "Bring on the punishment, if you are truthful."
So when the promise will come upon them and they will see the punishment close to them on the Day of Judgement, the faces of those who disbelieved in Allah will change and become dark. And it will be said to them, “This is what you used to ask for and want hastily!”