Surah An-Nisa' (The Women), Verse 137

اِنَّ الَّذِیْنَ اٰمَنُوْا ثُمَّ كَفَرُوْا ثُمَّ اٰمَنُوْا ثُمَّ كَفَرُوْا ثُمَّ ازْدَادُوْا كُفْرًا لَّمْ یَكُنِ اللّٰهُ لِیَغْفِرَ لَهُمْ وَلَا لِیَهْدِیَهُمْ سَبِیْلًا ۟

Innal lazeena aamanoo summa kafaroo summa aamanoo summa kafaroo summaz daado kufral lam yakunil laahu liyaghfira lahum wa laa liyahdiyahum sabeelaa

“Those who believe, then reject faith, then believe (again) and (again) reject faith, and go on increasing in unbelief,- Allah will not forgive them nor guide them on the way.”

Quran 4:137 (Yusuf Ali Translation)