What will show you what the Crashing Blow is?This is a way of magnifying it due to its severity (shidda). Everything in the Qurʾān which is preceded by the words: What will show you? is something about which He has not yet provided information, just as He said: And what will explain [it] to you? The Hour may well be near [33:63]; He had not informed [the Prophet] of it up until His words: What will show you what the Crashing Blow is? Then He informed [him] about it.His words, Exalted is He: