"And what will explain to you what the Day of Recompense is? Then, what will explain to you what the Day of Recompense is?" He repeated the mention of it twice to signify its greatness.
﴿وَمَا أَدْرَاكَ مَا يَوْمُ الدِّينِ ثُمَّ مَا أَدْرَاكَ مَا يَوْمُ الدّين﴾ ثنى ذكره تَعْظِيمًا لَهُ