Hypocrisy and Hidden Doubts

أَفِى قُلُوبِهِم مَّرَضٌ أَمِ ٱرْتَابُوٓا۟ أَمْ يَخَافُونَ أَن يَحِيفَ ٱللَّهُ عَلَيْهِمْ وَرَسُولُهُۥ ۚ بَلْ أُو۟لَـٰٓئِكَ هُمُ ٱلظَّـٰلِمُونَ

Is there disease in their hearts? Or have they doubted? Or do they fear that Allāh will be unjust to them, or His Messenger? Rather, it is they who are the wrongdoers [i.e., the unjust].