The steadfastness of believers against evil

وَلَقَدْ صَدَّقَ عَلَيْهِمْ إِبْلِيسُ ظَنَّهُۥ فَٱتَّبَعُوهُ إِلَّا فَرِيقًا مِّنَ ٱلْمُؤْمِنِينَ

And Iblees had already confirmed through them his assumption, so they followed him, except for a party of believers.