The Mutual Disillusion
ذَٰلِكَ بِأَنَّهُۥ كَانَت تَّأْتِيهِمْ رُسُلُهُم بِٱلْبَيِّنَـٰتِ فَقَالُوٓا۟ أَبَشَرٌ يَهْدُونَنَا فَكَفَرُوا۟ وَتَوَلَّوا۟ ۚ وَّٱسْتَغْنَى ٱللَّهُ ۚ وَٱللَّهُ غَنِىٌّ حَمِيدٌ
That is because their messengers used to come to them with clear evidences, but they said, "Shall human beings guide us?" and disbelieved and turned away. And Allah dispensed [with them]; and Allah is Free of need and Praiseworthy.
Nearby ayahs help place verse 64:6 in sequence and meaning.
يَعْلَمُ مَا فِى ٱلسَّمَـٰوَٰتِ وَٱلْأَرْضِ وَيَعْلَمُ مَا تُسِرُّونَ وَمَا تُعْلِنُونَ ۚ وَٱللَّهُ عَلِيمٌۢ بِذَاتِ ٱلصُّدُورِ
He knows what is within the heavens and earth and knows what you conceal and what you declare. And Allah is Knowing of that within the breasts.
أَلَمْ يَأْتِكُمْ نَبَؤُا۟ ٱلَّذِينَ كَفَرُوا۟ مِن قَبْلُ فَذَاقُوا۟ وَبَالَ أَمْرِهِمْ وَلَهُمْ عَذَابٌ أَلِيمٌ
Has there not come to you the news of those who disbelieved before? So they tasted the bad consequence of their affair, and they will have a painful punishment.
زَعَمَ ٱلَّذِينَ كَفَرُوٓا۟ أَن لَّن يُبْعَثُوا۟ ۚ قُلْ بَلَىٰ وَرَبِّى لَتُبْعَثُنَّ ثُمَّ لَتُنَبَّؤُنَّ بِمَا عَمِلْتُمْ ۚ وَذَٰلِكَ عَلَى ٱللَّهِ يَسِيرٌ
Those who disbelieve have claimed that they will never be resurrected. Say, "Yes, by my Lord, you will surely be resurrected; then you will surely be informed of what you did. And that, for Allah, is easy."
فَـَٔامِنُوا۟ بِٱللَّهِ وَرَسُولِهِۦ وَٱلنُّورِ ٱلَّذِىٓ أَنزَلْنَا ۚ وَٱللَّهُ بِمَا تَعْمَلُونَ خَبِيرٌ
So believe in Allah and His Messenger and the Qur'an which We have sent down. And Allah is Acquainted with what you do.