أَفَلَمْ يَدَّبَّرُوا۟ ٱلْقَوْلَ أَمْ جَآءَهُم مَّا لَمْ يَأْتِ ءَابَآءَهُمُ ٱلْأَوَّلِينَ Qur’an Al-Muminun (23:68)Afalam yaddabbaroo alqawla am jaahum ma lam yati abaahumu alawwaleena
Implying that the message of the Qur'an is but a continuation of all the divine messages ever revealed to man.
If they ponder over the matter, they will find that Allah's Message to humanity is as old as Adam. It is good for all ages. It never grows old, and it is never new.