A short, direct question to the reader: did you think you were created without purpose, and would never return to Allah? The passage closes with a prayer for forgiveness and mercy.
Al-Mu'minun 23:115–118
Listen on Quran.comأَفَحَسِبْتُمْ أَنَّمَا خَلَقْنَـٰكُمْ عَبَثًا وَأَنَّكُمْ إِلَيْنَا لَا تُرْجَعُونَ
23:115So did you think that We created you for nothing, and that you will not be brought back to Us?”
فَتَعَـٰلَى ٱللَّهُ ٱلْمَلِكُ ٱلْحَقُّ ۖ لَآ إِلَـٰهَ إِلَّا هُوَ رَبُّ ٱلْعَرْشِ ٱلْكَرِيمِ
23:116So, High above all is Allah, the King, the True. There is no god but He, the Lord of the Noble Throne.
وَمَن يَدْعُ مَعَ ٱللَّهِ إِلَـٰهًا ءَاخَرَ لَا بُرْهَـٰنَ لَهُۥ بِهِۦ فَإِنَّمَا حِسَابُهُۥ عِندَ رَبِّهِۦٓ ۚ إِنَّهُۥ لَا يُفْلِحُ ٱلْكَـٰفِرُونَ
23:117And whoever invokes another god with Allah, while he has no proof for it, his reckoning is only with his Lord. Surely, the infidels will not achieve success.
وَقُل رَّبِّ ٱغْفِرْ وَٱرْحَمْ وَأَنتَ خَيْرُ ٱلرَّٰحِمِينَ
23:118And say (O prophet) “My Lord, grant pardon and have mercy, for you are the best of all the merciful.”
English translation: Mufti Muhammad Taqi Usmani, The Meanings of the Noble Qur'an, via Quran.com. Arabic: Uthmani script.
How would you live differently if you were sure this life will be accounted for?