The Originator
إِنَّآ أَرْسَلْنَـٰكَ بِٱلْحَقِّ بَشِيرًا وَنَذِيرًا ۚ وَإِن مِّنْ أُمَّةٍ إِلَّا خَلَا فِيهَا نَذِيرٌ
Indeed, We have sent you with the truth as a bringer of good tidings and a warner. And there was no nation but that there had passed within it a warner.
Nearby ayahs help place verse 35:24 in sequence and meaning.
وَمَا يَسْتَوِى ٱلْأَحْيَآءُ وَلَا ٱلْأَمْوَٰتُ ۚ إِنَّ ٱللَّهَ يُسْمِعُ مَن يَشَآءُ ۖ وَمَآ أَنتَ بِمُسْمِعٍ مَّن فِى ٱلْقُبُورِ
And not equal are the living and the dead. Indeed, Allah causes to hear whom He wills, but you cannot make hear those in the graves.
إِنْ أَنتَ إِلَّا نَذِيرٌ
You, [O Muhammad], are not but a warner.
وَإِن يُكَذِّبُوكَ فَقَدْ كَذَّبَ ٱلَّذِينَ مِن قَبْلِهِمْ جَآءَتْهُمْ رُسُلُهُم بِٱلْبَيِّنَـٰتِ وَبِٱلزُّبُرِ وَبِٱلْكِتَـٰبِ ٱلْمُنِيرِ
And if they deny you - then already have those before them denied. Their messengers came to them with clear proofs and written ordinances and with the enlightening Scripture.
ثُمَّ أَخَذْتُ ٱلَّذِينَ كَفَرُوا۟ ۖ فَكَيْفَ كَانَ نَكِيرِ
Then I seized the ones who disbelieved, and how [terrible] was My reproach.