وَقَالَ ٱلَّذِينَ أُوتُوا۟ ٱلْعِلْمَ وَٱلْإِيمَٰنَ لَقَدْ لَبِثْتُمْ فِى كِتَٰبِ ٱللَّهِ إِلَىٰ يَوْمِ ٱلْبَعْثِ ۖ فَهَٰذَا يَوْمُ ٱلْبَعْثِ وَلَٰكِنَّكُمْ كُنتُمْ لَا تَعْلَمُونَ
Commentary:
The verse purports to say that when disbelievers will have realized to their discomfiture that the time of their prosperity and progress was very short, they will be told by true believers that according to divine decree they (disbelievers) were left alone to indulge in vice and sin up to the Day of Resurrection i.e. till the advent of a Divine Prophet, when all their prosperity and grandeur was to have come to an end. Thus the words "Day of Resurrection" do not refer to Resurrection after death but to the rise and fall of nations in this world.
The disbelievers or Christian nations of the West are here warned that their final destruction will take place after the renaissance of Islam in the Latter Days and not, as they misunderstand, in the time of its first phenomenal rise and spread.
The expression, 'Day of Resurrection,' here does not refer to Resurrection after death but to the advent of a new Divine Reformer when people are raised to a renewed spiritual life.