("O you who have believed, fear Allah as He should be feared.") Ibn Mas'ud said: "To fear Him as He should be feared is that He is obeyed and not disobeyed, that He is thanked and not ungratefully denied, and that He is remembered and not forgotten." Qatadah said: "This verse was revealed and it felt heavy upon them, then Allah revealed ease and leniency, saying: (So fear Allah as much as you are able, and listen, and obey)."
﴿يَا أَيهَا الَّذِينَ آمَنُوا اتَّقُوا اللَّهَ حَقَّ تُقَاته﴾ قَالَ ابْن مَسْعُود: حق تُقَاته أَن يطاع فَلَا يعْصى، ويشكر فَلَا يكفر، وَيذكر فَلَا ينسى. قَالَ قَتَادَة: نزلت هَذِه الْآيَة فَثقلَتْ عَلَيْهِم، ثمَّ أنزل الله الْيُسْر وَالتَّخْفِيف، فَقَالَ: ﴿فَاتَّقُوا اللَّهَ مَا اسْتَطَعْتُم واسمعوا وَأَطيعُوا﴾
