﴿ أَمْ حَسِبَ ٱلَّذِينَ فِى قُلُوبِهِم مَّرَضٌ أَن لَّن يُخْرِجَ ٱللَّهُ أَضْغَٰنَهُمْ ﴾

“Or do they in whose hearts is disease think, perchance, that God would never bring their moral failings to light?”

(Or do those in whose hearts is a disease) doubt and hypocrisy (deem that Allah will not bring to light their (secret) hates) and enmity towards Allah and His Messenger; and it is also said that this means: did they think that Allah will not bring to light their hypocrisy, enmity and hatred for the believers to know?