15:8
مَا نُنَزِّلُ ٱلْمَلَـٰٓئِكَةَ إِلَّا بِٱلْحَقِّ وَمَا كَانُوٓا۟ إِذًا مُّنظَرِينَ
We do not send down the angels except with truth; and the disbelievers would not then be reprieved.
The Rocky Tract
مَا نُنَزِّلُ ٱلْمَلَـٰٓئِكَةَ إِلَّا بِٱلْحَقِّ وَمَا كَانُوٓا۟ إِذًا مُّنظَرِينَ
We do not send down the angels except with truth; and the disbelievers would not then be reprieved.
Nearby ayahs help place verse 15:8 in sequence and meaning.
وَقَالُوا۟ يَـٰٓأَيُّهَا ٱلَّذِى نُزِّلَ عَلَيْهِ ٱلذِّكْرُ إِنَّكَ لَمَجْنُونٌ
And they say, "O you upon whom the message has been sent down, indeed you are mad.
لَّوْ مَا تَأْتِينَا بِٱلْمَلَـٰٓئِكَةِ إِن كُنتَ مِنَ ٱلصَّـٰدِقِينَ
Why do you not bring us the angels, if you should be among the truthful?"
إِنَّا نَحْنُ نَزَّلْنَا ٱلذِّكْرَ وَإِنَّا لَهُۥ لَحَـٰفِظُونَ
Indeed, it is We who sent down the Qur'an and indeed, We will be its guardian.
وَلَقَدْ أَرْسَلْنَا مِن قَبْلِكَ فِى شِيَعِ ٱلْأَوَّلِينَ
And We had certainly sent [messengers] before you, [O Muhammad], among the sects of the former peoples.