Allah the Exalted reaffirms the stubbornness of the idolators and their ignorance of what goes around them,

[وَإِن يَرَوْاْ كِسْفاً مِّنَ السَّمَآءِ سَـقِطاً]

(And if they were to see a piece of the heaven falling down,) meaning, on them as punishment, they would not believe it is coming their way, saying that, these are layers of clouds on top of each other. Allah the Exalted said in other Ayat,

[وَلَوْ فَتَحْنَا عَلَيْهِم بَاباً مِّنَ السَّمَاءِ فَظَلُّواْ فِيهِ يَعْرُجُونَ - لَقَالُواْ إِنَّمَا سُكِّرَتْ أَبْصَـرُنَا بَلْ نَحْنُ قَوْمٌ مَّسْحُورُونَ ]

(And even if We opened to them a gate from the heaven and they were to keep on ascending thereto (all day long), they would surely say (in the evening): "Our eyes have been dazzled. Nay, we are a people bewitched.'')(15:14-15) Allah the Exalted said,

[فَذَرْهُمْ]

(So leave them alone), `O Muhammad,'

[حَتَّى يُلَـقُواْ يَوْمَهُمُ الَّذِى فِيهِ يُصْعَقُونَ]

(till they meet their Day, in which they will sink into a fainting.) on the Day of Resurrection,

[يَوْمَ لاَ يُغْنِى عَنْهُمْ كَيْدُهُمْ شَيْئاً]

(The Day when their plotting shall not avail them at all, ) meaning, on the Day of Resurrection, their deceit and plots they planned in this life shall not help them in the least,

[وَلاَ هُمْ يُنصَرُونَ]

(nor will they be helped.) Allah the Exalted said,

[وَإِنَّ لِلَّذِينَ ظَلَمُواْ عَذَاباً دُونَ ذَلِكَ]

(And verily, for those who do wrong, there is another punishment before this;) meaning, that of being the torment in this world. Allah the Exalted said in another Ayah,

[وَلَنُذِيقَنَّهُمْ مِّنَ الْعَذَابِ الاٌّدْنَى دُونَ الْعَذَابِ الاٌّكْبَرِ لَعَلَّهُمْ يَرْجِعُونَ ]

(And verily, We will make them taste of the near torment prior to the supreme torment (in the Hereafter), in order that they may return.)(32:21) Allah said;

[وَلَـكِنَّ أَكْثَرَهُمْ لاَ يَعْلَمُونَ]

(but most of them know not.) meaning, `We will torment them in the life of the world and test them with various hardships, so that they might go back and repent. However, they do not understand what is happening to them or why, because when the torment is removed, they revert to committing the worst of what they used to do before.' A Hadith states that,