Al-Qur’an is considered to be a holy book of Muslims but contrary to this common belief , Qur’an says that it is a book for all mankind
الر كِتَابٌ أَنزَلْنَاهُ إِلَيْكَ لِتُخْرِجَ النَّاسَ مِنَ الظُّلُمَاتِ إِلَى النُّورِ بِإِذْنِ رَبِّهِمْ إِلَى صِرَاطِ الْعَزِيزِ الْحَمِيدِ
14:1 A.L.R. Alif–Laam–Ra (Allah, Lateef the Unfathomable, Raaziq the Provider, states that), A Divine Writ this is that We have revealed to you (O Prophet) so that you may bring forth all mankind, by their Sustainer’s leave, out of darkness into light. On to the way that leads to the Almighty, the Owner of all praise. [14:5, 33:43]
The day mankind realizes this fact , the journey from darkness to light will begin as only Al-Qur’an has the power to replace darkness with light .