Muhammad 47:18

Are they but waiting for the Hour to come upon them by surprise? Already [some of] its signs have appeared[13]. What good will it do them to take heed when it actually befalls them?

[13] Such as the coming of Prophet Muhammad (ﷺ), and the splitting of the moon after the pagans of Makkah challenged the Prophet (ﷺ) which was fulfilled before their eyes, yet they denied that miracle.

Then do they await except that the Hour should come upon them unexpectedly? But already there have come [some of] its indications. Then how [i.e., what good] to them, when it has come, will be their remembrance?

18. Do they then await (anything) other than the Hour, that it should come upon them suddenly? But some of its portents (indications and signs) have already come; and when it (actually) is on them, how can they benefit then by their reminder?[4]

[4] (V.47:18) See the footnote of (V.6:158).

Await they aught save the Hour, that it should come upon them unawares? And the beginnings thereof have already come. But how, when it hath come upon them, can they take their warning?