consequences of turning away from truth

أَلَمْ تَرَ إِلَى ٱلَّذِينَ أُوتُوا۟ نَصِيبًا مِّنَ ٱلْكِتَـٰبِ يُدْعَوْنَ إِلَىٰ كِتَـٰبِ ٱللَّهِ لِيَحْكُمَ بَيْنَهُمْ ثُمَّ يَتَوَلَّىٰ فَرِيقٌ مِّنْهُمْ وَهُم مُّعْرِضُونَ

Do you not consider, [O Muḥammad], those who were given a portion of the Scripture? They are invited to the Scripture of Allāh that it should arbitrate between them; then a party of them turns away, and they are refusing.

وَأَقْسَمُوا۟ بِٱللَّهِ جَهْدَ أَيْمَـٰنِهِمْ لَئِن جَآءَهُمْ نَذِيرٌ لَّيَكُونُنَّ أَهْدَىٰ مِنْ إِحْدَى ٱلْأُمَمِ ۖ فَلَمَّا جَآءَهُمْ نَذِيرٌ مَّا زَادَهُمْ إِلَّا نُفُورًا

And they swore by Allāh their strongest oaths that if a warner came to them, they would be more guided than [any] one of the [previous] nations. But when a warner came to them, it did not increase them except in aversion

وَمَن يُضْلِلِ ٱللَّهُ فَمَا لَهُۥ مِن وَلِىٍّ مِّنۢ بَعْدِهِۦ ۗ وَتَرَى ٱلظَّـٰلِمِينَ لَمَّا رَأَوُا۟ ٱلْعَذَابَ يَقُولُونَ هَلْ إِلَىٰ مَرَدٍّ مِّن سَبِيلٍ

And he whom Allāh sends astray - for him there is no protector beyond Him. And you will see the wrongdoers, when they see the punishment, saying, "Is there for return [to the former world] any way?"

أَفَرَءَيْتَ ٱلَّذِى تَوَلَّىٰ

Have you seen the one who turned away

وَإِنِّى كُلَّمَا دَعَوْتُهُمْ لِتَغْفِرَ لَهُمْ جَعَلُوٓا۟ أَصَـٰبِعَهُمْ فِىٓ ءَاذَانِهِمْ وَٱسْتَغْشَوْا۟ ثِيَابَهُمْ وَأَصَرُّوا۟ وَٱسْتَكْبَرُوا۟ ٱسْتِكْبَارًا

And indeed, every time I invited them that You may forgive them, they put their fingers in their ears, covered themselves with their garments, persisted, and were arrogant with [great] arrogance.