spiritual blindness and sealing of hearts

أَفَرَءَيْتَ مَنِ ٱتَّخَذَ إِلَـٰهَهُۥ هَوَىٰهُ وَأَضَلَّهُ ٱللَّهُ عَلَىٰ عِلْمٍ وَخَتَمَ عَلَىٰ سَمْعِهِۦ وَقَلْبِهِۦ وَجَعَلَ عَلَىٰ بَصَرِهِۦ غِشَـٰوَةً فَمَن يَهْدِيهِ مِنۢ بَعْدِ ٱللَّهِ ۚ أَفَلَا تَذَكَّرُونَ

Have you seen he who has taken as his god his [own] desire, and Allāh has sent him astray due to knowledge and has set a seal upon his hearing and his heart and put over his vision a veil? So who will guide him after Allāh? Then will you not be reminded?