Surah Saba 34:31

وَقَالَ ٱلَّذِينَ كَفَرُوا۟ لَن نُّؤْمِنَ بِهَـٰذَا ٱلْقُرْءَانِ وَلَا بِٱلَّذِى بَيْنَ يَدَيْهِ ۗ وَلَوْ تَرَىٰٓ إِذِ ٱلظَّـٰلِمُونَ مَوْقُوفُونَ عِندَ رَبِّهِمْ يَرْجِعُ بَعْضُهُمْ إِلَىٰ بَعْضٍ ٱلْقَوْلَ يَقُولُ ٱلَّذِينَ ٱسْتُضْعِفُوا۟ لِلَّذِينَ ٱسْتَكْبَرُوا۟ لَوْلَآ أَنتُمْ لَكُنَّا مُؤْمِنِينَ

And those who disbelieve say, "We will never believe in this Qur’ān nor in that before it." But if you could see when the wrongdoers are made to stand before their Lord, refuting each others' words... Those who were oppressed will say to those who were arrogant, "If not for you, we would have been believers."

Translation: Saheeh International

Tafsir

And those who disbelieve from among the people of Mecca say ‘We will not believe in this Qur’ān nor in that which was revealed before it’ — in other words what preceded it such as the Torah and the Gospel both of which contain proofs of the Resurrection — because they reject the truth of this last. …

Excerpt from Tafsir al-Jalalayn, commentary on 34:31, via Quran.com. The reader has the full commentary and 9 more tafsirs.