Verse 88

وَقَالُوا۟ قُلُوبُنَا غُلْفٌۢ بَل لَّعَنَهُمُ ٱللَّهُ بِكُفْرِهِمْ فَقَلِيلًا مَّا يُؤْمِنُونَ

And they said our minds are made up. On the contrary it is God who has put a curse upon them because of their lack of faith, consequently only a few will attain faith.