Al Fajr Ayah 23

وَجِاْىٓءَ يَوْمَئِذِۭ بِجَهَنَّمَ‌ۚ يَوْمَئِذٍ يَتَذَكَّرُ ٱلْإِنسَـٰنُ وَأَنَّىٰ لَهُ ٱلذِّكْرَىٰ ٢٣ and Hell is brought forth on that Day—this is when every ?disbelieving? person will remember ?their own sins?. But what is the use of remembering then?