وَجَعَلْنَا مِن بَيْنِ أَيْدِيهِمْ سَدًّا وَمِنْ خَلْفِهِمْ سَدًّا فَأَغْشَيْنَاهُمْ فَهُمْ لَا يُبْصِرُونَ (9)
(36:9) and We have put a barrier before them and a barrier behind them, and have covered them up, so they are unable to see. *7
*7) Set a barrier before them and a barrier behind them" means that the natural result of their stubbornness and pride is that they neither learn any lesson from their past history nor ever consider the consequences of the fixture. Their prejudices have so covered them from every side and their misconceptions have so blinded them that they cannot see even those glaring realities which are visible to every right-thinking and unbiased person.