﴿ إِنَّ ٱلَّذِينَ ٱشْتَرَوُا۟ ٱلْكُفْرَ بِٱلْإِيمَٰنِ لَن يَضُرُّوا۟ ٱللَّهَ شَيْـًۭٔا وَلَهُمْ عَذَابٌ أَلِيمٌۭ ﴾

“Verily, they who have bought a denial of the truth at the price of faith can in no wise harm God, whereas grievous suffering awaits them.”

Previous verses mentioned the treachery and ill-will of the hypocrites. The present verses comfort the Holy Prophet ﷺ asking him not to grieve over the mischief made by the disbelievers for they cannot harm him in any way. The last verse (178) carries a refutation of the false notion about disbelievers: How can they, while obviously prospering in the present world, be regarded as victims of Allah's wrath and rejection?