فَلَمَّا رَأَوْا۟ بَأْسَنَا قَالُوٓا۟ ءَامَنَّا بِٱللَّهِ وَحْدَهُۥ وَكَفَرْنَا بِمَا كُنَّا بِهِۦ مُشْرِكِينَ Qur’an Ghafir (40:84)Falamm a raaw basan a q a loo a mann a bi A ll a hi wa h dahu wakafarn a bim a kunn a bihi mushrikeen a
I.e., the God-willed, catastrophic breakdown of their society and civilization in consequence of their persistent rejection of all spiritual values.
This evidently includes their past belief in man's supposedly "unlimited possibilities" and the illusory conviction that one day he would achieve "mastery over nature".