﴿ وَإِنَّهُمْ لَيَصُدُّونَهُمْ عَنِ ٱلسَّبِيلِ وَيَحْسَبُونَ أَنَّهُم مُّهْتَدُونَ ﴾

“whereupon, behold, these [evil impulses] bar all such from the path [of truth], making them think that they are guided aright!”

Please check ayah 43:45 for complete tafsir.