أَفَلاَ يَتَدَبَّرُونَ الْقُرْءَانَ أَمْ عَلَى قُلُوبٍ أَقْفَالُهَآ - إِنَّ الَّذِينَ ارْتَدُّواْ عَلَى أَدْبَـرِهِمْ مِّن بَعْدِ مَا تَبَيَّنَ لَهُمُ الْهُدَى الشَّيْطَـنُ سَوَّلَ لَهُمْ وَأَمْلَى لَهُمْ - ذَلِكَ بِأَنَّهُمْ قَالُواْ لِلَّذِينَ كَرِهُواْ مَا نَزَّلَ اللَّهُ سَنُطِيعُكُمْ فِى بَعْضِ الاٌّمْرِ وَاللَّهُ يَعْلَمُ إِسْرَارَهُمْ - فَكَيْفَ إِذَا تَوَفَّتْهُمُ الْمَلَـئِكَةُ يَضْرِبُونَ وُجُوهَهُمْ وَأَدْبَـرَهُمْ - ذَلِكَ بِأَنَّهُمُ اتَّبَعُواْ مَآ أَسْخَطَ اللَّهَ وَكَرِهُواْ رِضْوَانَهُ فَأَحْبَطَ أَعْمَـلَهُمْ
24. Will they not then reflect upon the Qur'an, or are there locks upon their hearts 25. Verily, those who have turned back as disbelievers after guidance had become clear to them -- Shaytan has enticed them and filled them with false hopes. 26. That is because they said to those who hate what Allah has sent down: â€We will obey you in part of the matter.'' And Allah knows their secrets. 27. Then how (will it be) when the angels will take their souls at death, striking their faces and their backs 28. That is because they followed that which angered Allah and hated what earns His pleasure, so He rendered their deeds worthless.  Commanding the people to reflect and ponder upon the Qur'an, and prohibiting them from turning away from it, Allah says,