Consequences of Covenant-Breaking

وَإِذْ تَأَذَّنَ رَبُّكَ لَيَبْعَثَنَّ عَلَيْهِمْ إِلَىٰ يَوْمِ ٱلْقِيَـٰمَةِ مَن يَسُومُهُمْ سُوٓءَ ٱلْعَذَابِ ۗ إِنَّ رَبَّكَ لَسَرِيعُ ٱلْعِقَابِ ۖ وَإِنَّهُۥ لَغَفُورٌ رَّحِيمٌ

And [mention] when your Lord declared that He would surely [continue to] send upon them until the Day of Resurrection those who would afflict them with the worst torment. Indeed, your Lord is swift in penalty; but indeed, He is Forgiving and Merciful.

وَلَوْلَآ أَن كَتَبَ ٱللَّهُ عَلَيْهِمُ ٱلْجَلَآءَ لَعَذَّبَهُمْ فِى ٱلدُّنْيَا ۖ وَلَهُمْ فِى ٱلْـَٔاخِرَةِ عَذَابُ ٱلنَّارِ

And if not that Allāh had decreed for them evacuation, He would have punished them in [this] world, and for them in the Hereafter is the punishment of the Fire.