Surah An-Nisa, ayah 155

فَبِمَا نَقۡضِهِم مِّيثَٰقَهُمۡ وَكُفۡرِهِم بِـَٔايَٰتِ ٱللَّهِ وَقَتۡلِهِمُ ٱلۡأَنۢبِيَآءَ بِغَيۡرِ حَقّٖ وَقَوۡلِهِمۡ قُلُوبُنَا غُلۡفُۢۚ بَلۡ طَبَعَ ٱللَّهُ عَلَيۡهَا بِكُفۡرِهِمۡ فَلَا يُؤۡمِنُونَ إِلَّا قَلِيلٗا ١٥٥

Fabimā naqdihim mīthāqahum wakufrihim bi'āyātillāhi waqatlihimul-ambiyā'a bighayri haqqin waqawlihim qulūbunā ghulfu bal taba'allāhu 'alayhā bikufrihim falā yu'minūna illā qalīlā

And [We cursed them]²³⁰ 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.²³¹