﴿ إِنَّ ٱلَّذِينَ كَفَرُوا۟ وَصَدُّوا۟ عَن سَبِيلِ ٱللَّهِ ثُمَّ مَاتُوا۟ وَهُمْ كُفَّارٌۭ فَلَن يَغْفِرَ ٱللَّهُ لَهُمْ ﴾

“Verily, as for those who are bent on denying the truth and on barring [others] from the path of God, and then die as deniers of the truth - indeed, God will not grant them forgiveness!”

Please check ayah 47:35 for complete tafsir.