For that...
For that, it requires a ‘Soul’ who is above worldly desires, who is not a slave to Nafs al-Ammara (soul which is attracted towards worldly desires), and who deserves Allah’s bounties and mercies by his spirituality and purity of soul. It is essential to remember that each and every man cannot have knowledge of Wahi or Ilham. For that, miracle is necessary whereby prophethood is proved, and whereby special relation between Allah and his messenger can be understood.
To prove that fact that Hazrat Muhammad Mustafa (S) was the prophet of Allah, it is suffice to say that he proclaimed his prophethood in Mecca, announced that there is only one God and that he is His prophet and performed innumerable miracles. Now show anyone else, who can perform like him and who has his attributes! Allah never supports a liar nor does He give him any miracles.
Of all his miracles, the Holy Qur’an is sufficient to prove his prophethood, while it is very illogical to put miracle in the hands of a wrong claimant and it is tantamount to supporting a liar. Not only that, it is against the Justice of Allah. From the prophethood of Hazrat Muhammad Mustafa (S), the prophethood of one hundred twenty four thousand prophets is also proved. He had given information about all these prophets. Prophet never gives wrong information and he does not lie.
The proof that the Holy Qur’an is a miracle is that the Holy Hazrat Prophet (S) put two options before the scholars of Arabic language: Either bring its reply or have faith in my prophethood; otherwise get ready for war which will result in all sorts of humiliations and insults. Though they were scholars of Arabic language, they bore all the hardships but did not reply to the Holy Qur’an. This means that they could not reply.
They were not in a position to reply otherwise they would not have suffered all these hardships. It is wrong to think that ‘word’ cannot be a miracle. ‘Mojiza’ is a name of everything to which people cannot reply and it becomes evident that the person has special relation with Allah. The fact that Mojiza is beyond the capacity of human beings is proved and accepted by those who specialize in this subject.
The scholars of Arabic language have accepted the miracle of Holy Qur’an in the same way as the magicians of Firaun accepted the miracle of the Asa (Stick) of Hazrat Moosa (a.s.), and they removed the Kasidas (poems) hanging in the Holy Kaaba in deference to the Ayaats of the Holy Qur’an.