And assuredly We have variously propounded in this Qur'an for mankind every kind of similitude; and man is of all things the most disputing. 54 And nothing has prevented the people from believing when guidance came to them and from asking forgiveness of their Lord except that there [must] befall them the [accustomed] precedent of the former peoples or that the punishment should come [directly] before them. 55 And We send not the Envoys, but good tidings to bear, and warning. Yet do the unbelievers dispute with falsehood, that they may rebut thereby the truth. They have taken My signs, and what they are warned of, in mockery. 56 And who is more unjust than one who, when reminded of the signs of his Lord, turns away from them and forgets what his hands have sent forward? We have put covers on their hearts so as not to understand the Qur’an, and deafness in their ears; and even if you call them to guidance, they will never attain the right path. 57 Your Lord is All-Forgiving, full of mercy. Had He wished to take them to task for their doings, He would have hastened in sending His scourge upon them. But He has set for them a time-limit which they cannot evade. 58 And these towns – We destroyed them when they committed injustice, and We had set an appointed time for their destruction. 59