﴿ ٱللَّهُ يَسْتَهْزِئُ بِهِمْ وَيَمُدُّهُمْ فِى طُغْيَٰنِهِمْ يَعْمَهُونَ ﴾

“God will requite them for their mockery, and will leave them for a while in their overweening arrogance, blindly stumbling to and fro:”

(Allah (Himself) doth mock them), in the Hereafter, i.e. He will open a gate of Paradise for them and then shut it before their eyes and so the believers will mock them. (Leaving them to wander blindly on in their contumacy) He will leave them in this world blind in their disbelief and error, unable to see either faith or guidance.