We have explained in detail in this Qur'an, for the benefit of mankind, every kind of similitude: but man is, in most things, contentious. 54 Nothing prevents people from believing when they are given guidance or from asking forgiveness of their Lord, but the fact that the fate of the previous peoples should befall them or to have the punishment come upon them face to face. 55 And We send not apostles save as bringers of glad tidings and warners; and those who disbelieve dispute with falsehood that they rebut thereby the truth; and they take My signs and that whereof they are warned as a mockery. 56 Who is more unjust than he who, on being reminded of his Lord's revelations, turns away from them, and forgets the evil deeds he had committed in the past. Verily We have placed a covering on their hearts so that they do not understand, and a deafness in their ears so that however you may call them to guidance they will never be guided aright. 57 And your Lord is the Oft Forgiver, the Merciful; if He seized them for their deeds, He would soon send the punishment upon them; but for them is an appointed time from which they will not find any refuge. 58 And these towns (population, 'Ad, Thamud, etc.) We destroyed when they did wrong. And We appointed a fixed time for their destruction. 59