An-Nisa 4:155

فَبِمَا نَقْضِهِم مِّيثَـٰقَهُمْ وَكُفْرِهِم بِـَٔايَـٰتِ ٱللَّهِ وَقَتْلِهِمُ ٱلْأَنۢبِيَآءَ بِغَيْرِ حَقٍّ وَقَوْلِهِمْ قُلُوبُنَا غُلْفٌۢ ۚ بَلْ طَبَعَ ٱللَّهُ عَلَيْهَا بِكُفْرِهِمْ فَلَا يُؤْمِنُونَ إِلَّا قَلِيلًا

Fabimā naqḍihim mīthāqahum wakuf'rihim biāyāti l-lahi waqatlihimu l-anbiyāa bighayri ḥaqqin waqawlihim qulūbunā ghul'fun bal ṭabaʿa l-lahu ʿalayhā bikuf'rihim falā yu'minūna illā qalīlan

And [We cursed them] for their breaking of the covenant and their disbelief in the signs of Allāh and their killing of the prophets without right and their saying, "Our hearts are wrapped" [i.e., sealed against reception]. Rather, Allāh has sealed them because of their disbelief, so they believe not, except for a few.