As for those who harbored doubts in their hearts, it actually added unholiness to their unholiness, and they died as disbelievers.
وَأَمَّا الَّذينَ فى قُلوبِهِم مَرَضٌ فَزادَتهُم رِجسًا إِلىٰ رِجسِهِم وَماتوا وَهُم كٰفِرونَ
wa ammal lazeena fee quloobihim maradun fazaadat hum rijsan ilaa rijsihim wa maatoo wa hum kaafiroon