ذَٰلِكَ That بِأَنَّهُمْ (is) because ءَامَنُوا۟ they believed ثُمَّ then كَفَرُوا۟ they disbelieved فَطُبِعَ so were sealed عَلَىٰ [upon] قُلُوبِهِمْ their hearts فَهُمْ so they لَا (do) not يَفْقَهُونَ understand ٣
That is because they believed, and then they disbelieved; so their hearts were sealed over, and they do not understand.
— Come To Light