(Al Qamar) 54 : 46
بَلِ السَّاعَةُ مَوْعِدُهُمْ وَالسَّاعَةُ أَدْهَىٰ وَأَمَرُّ
Nay, the Last Hour is their promised time; while the Last Hour will be the most calamitous, and the most bitter.
See explanation 40: 16-18, 31-33; 54: 6.