﴿ وَلَقَدْ صَرَّفْنَا لِلنَّاسِ فِى هَٰذَا ٱلْقُرْءَانِ مِن كُلِّ مَثَلٍۢ فَأَبَىٰٓ أَكْثَرُ ٱلنَّاسِ إِلَّا كُفُورًۭا ﴾

“For, indeed, many facets have We given in this Qur'an to every kind of lesson [designed] for [the benefit of] mankind! However, most men are unwilling to accept anything but blasphemy”

The last verse: وَلَقَدْ صَرَّ‌فْنَا (And surely We have explained - 89) tells us that the Holy Qur’ an stands out as a miracle so clear that it leaves no room for any question and doubt. Still, what is happening is that people do not thank Allah for His blessings, do not even recognize the real worth of the blessing of the Qur'an and keep wandering around in error.