فَكَيفَ كانَ عَذابي وَنُذُرِ

So how were My punishment and My warnings?!

EXEGESIS

As discussed under verse 16, the repetition of this verse is for emphasis and warning.

EXPOSITION

This verse alludes with brevity what the following verses describe in detail.[1]

In as much as the signs and warnings of Allah were clear, the punishment was equally terrifying.[2]

[1] Munyah, 27/211.
[2] Mudarrisi, 14/244.