﴿ وَلَئِنْ أَخَّرْنَا عَنْهُمُ ٱلْعَذَابَ إِلَىٰٓ أُمَّةٍۢ مَّعْدُودَةٍۢ لَّيَقُولُنَّ مَا يَحْبِسُهُۥٓ ۗ أَلَا يَوْمَ يَأْتِيهِمْ لَيْسَ مَصْرُوفًا عَنْهُمْ وَحَاقَ بِهِم مَّا كَانُوا۟ بِهِۦ يَسْتَهْزِءُونَ ﴾

“And thus it is: if We defer their suffering until a time-limit set [by Us], they are sure to say, "What is preventing it [from coming now]?" Oh, verily, on the Day when it befalls them there will be nothing to avert it from them; and they shall be overwhelmed by the very thing which they were wont to deride.”

Described in the seventh verse is the condition of those who denied that there was to be a Last Day and a Hereafter. Like chronic deniers of the truth, when they do not understand (or do not want to under-stand) something, they would dismiss it as nothing but magic. In the eighth verse, an answer has been given to people who doubted the warnings of punishment given by prophets, peace be on them. Not willing to believe them, they used to ask them if they were true, and if they were, why the punishment they warned them of would not come?