Qur'an as a Reminder

Quran is a reminder, they won't remember except if Allah wills

أعوذ بالله من الشيطان الرجيم 

Al-Muddaththir 74:54

كَلَّآ إِنَّهُۥ تَذْكِرَةٌ 

No! Indeed, the Qur'an is a reminder

Al-Muddaththir 74:55

فَمَن شَآءَ ذَكَرَهُۥ 

Then whoever wills will remember it.

Al-Muddaththir 74:56

وَمَا يَذْكُرُونَ إِلَّآ أَن يَشَآءَ ٱللَّهُۚ هُوَ أَهْلُ ٱلتَّقْوَىٰ وَأَهْلُ ٱلْمَغْفِرَةِ 

And they will not remember except that Allah wills. He is worthy of fear and adequate for [granting] forgiveness.