54:16

فَكَيْفَ كَانَ عَذَابِي وَنُذُرِ

Transliteration:

Fakayfa kana AAathabee wanuthuri

Word by Word:

So how was My punishment and My warnings?

Translations:

And how severe is the suffering which I inflict when My warnings are disregarded!

But how (terrible) was My Penalty and My Warning?

Then see how (dreadful) was My punishment after My warnings!

And made water to flow forth in the land in springs, so the water gathered together according to a measure already ordained.

And how [severe] were My punishment and warning.