Have they not seen all the things in front of them and behind them, in the heaven and the earth? If we willed, we could have caused the earth to swallow them, or caused masses to fall on them from the sky. This should be a sufficient proof for every obedient servant.
أَفَلَم يَرَوا إِلىٰ ما بَينَ أَيديهِم وَما خَلفَهُم مِنَ السَّماءِ وَالأَرضِ إِن نَشَأ نَخسِف بِهِمُ الأَرضَ أَو نُسقِط عَلَيهِم كِسَفًا مِنَ السَّماءِ إِنَّ فى ذٰلِكَ لَـٔايَةً لِكُلِّ عَبدٍ مُنيبٍ
afalam yaraw ilaa maa baina aydeehim wa maa khalfahum minas samaaa’i wal ard; in nashad nakhsif bihimul arda aw nusqit ‘alaihim kisafam minas samaaa’; inna fee zaalika la Aayatal likulli ‘abdim muneeb