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 We never send apostles but to convey happy tidings, and to warn. But those who disbelieve contend with false arguments to nullify the truth. They make a mockery of My revelations and of what they had been warned. 56 And who doth greater wrong than he who is admonished with the signs of His Lord yet turneth away from them and forgetteth that which his hands have sent forth? Verily We have set up veils over their hearts lest they should understand it, and in their ears a heaviness; and if thou callest them to the guidance, lo! they will not let themselves be guided ever. 57 Thy Lord is the Forgiver, Full of Mercy. If He took them to task (now) for what they earn, He would hasten on the doom for them; but theirs is an appointed term from which they will find no escape. 58 as [was the case with all] those communities that We destroyed when they went on and on doing wrong: for We had set a time-limit for their destruction. 59