Ali ‘Imran Ayah 90
إِنَّ ٱلَّذِينَ كَفَرُواْ بَعْدَ إِيمَـٰنِهِمْ ثُمَّ ٱزْدَادُواْ كُفْرًا لَّن تُقْبَلَ تَوْبَتُهُمْ وَأُوْلَـٰٓئِكَ هُمُ ٱلضَّآلُّونَ ٩٠
Indeed, those who disbelieve after having believed then increase in disbelief, their repentance will never be accepted. It is they who are astray.