Al A’raf Ayah 101

تِلْكَ ٱلْقُرَىٰ نَقُصُّ عَلَيْكَ مِنْ أَنۢبَآئِهَا‌ۚ وَلَقَدْ جَآءَتْهُمْ رُسُلُهُم بِٱلْبَيِّنَـٰتِ فَمَا كَانُواْ لِيُؤْمِنُواْ بِمَا كَذَّبُواْ مِن قَبْلُ‌ۚ كَذَٲلِكَ يَطْبَعُ ٱللَّهُ عَلَىٰ قُلُوبِ ٱلْكَـٰفِرِينَ ١٠١ We have narrated to you ?O Prophet? some of the stories of those societies. Surely, their messengers came to them with clear proofs, but still they would not believe in what they had already denied. This is how Allah seals the hearts of the disbelievers.