In Part 6 of the commentary (tafseer) of Chapter 50 of the Quran, Surah  Qaaf, we review Verses 15 to 16 under the theme of "Disbelieving Nations  of the Past".
أَفَعَيِينَا بِالْخَلْقِ الْأَوَّلِ ۚ بَلْ هُمْ فِي لَبْسٍ مِنْ خَلْقٍ  جَدِيدٍ {15} [50:15] Were We then fatigued with the first creation? Yet are they in doubt with regard to a new creation.  
وَلَقَدْ خَلَقْنَا الْإِنْسَانَ وَنَعْلَمُ مَا تُوَسْوِسُ بِهِ نَفْسُهُ ۖ وَنَحْنُ أَقْرَبُ إِلَيْهِ مِنْ حَبْلِ الْوَرِيدِ {16} [50:16] And certainly We created man, and We know what his mind suggests to him, and We are nearer to him than his life-vein.