Q: The holy Quran ha stated that:
" وَمَا أَرْسَلْنَا مِنْ رَسُولٍ إِلَّا بِلِسَانِ قَوْمِهِ" (ابراهیم/4)
“And we are sent a messenger save with the language of his folk…” [Ibrahim/4]
Why did the claimants of Babism and Baha’ism write their so-called spiritual books in Arabic language?!
The Baha’i proselytizers have answered: Referring the past, you will figure out that the scientific texts were being written in Arabic language at that period of time!
Answer: Were the claimants of prophethod writing scientific texts that they had to write many errors for their followers?!
Of course, the Baha’i proselytizers introduce the Excellency Taher Zadeh’s answer (one of the members of the universal house of justice) as their reason who said:
“In Iran, in 19th century, most people were illiterate and under the dominance of clergymen whom they were blindly imitated. (At that time) there were two educated groups: scholars, governmental managers and a small group of other people. (meantime) just the scholars were identified as knowledgeable. They were spending many years to learn theology. Islamic laws, jurisprudence, philosophy, medicine, astronomy, and Arabic language and literature. Because Arabic language was the language of the holy Quran, the scholars paid more attention to study it. Many people were spending most of their lifetimes to be specialized at this language because it was extensively used. They considered no epistle to be worth studying except they had been written in Arabic language. They assumed no lecture or speech to be eloquent and shocking except a clergyman was giving a lecture or sermon in which he was using hard and usually incomprehensible words during it. Hereby, they were making their addressees’ minds excited; although they might not understand their concepts. The criterion for measuring a person’s knowledge depth was his skill and proficiency in Arabic language and the size of his turban.”
1) The insulting and scornful of the Excellency Taher Zadeh towards the Iranians is reminding us the proverb that goes: “heathen to their religion considers all.” Otherwise, supposing even most Iranians are illiterate, shouldn’t the divine statement be understandable comparing others’?! At the time when the holy prophet (P.H.) emerged, were the majority of the society literate in order for people to distinguish the inspiration out of the Arab poets?!
2) If we accept this justification of the Excellency Taher Zadeh it will be concluded that the Baha’ism leaders were going to charm the Persian speaking addressees towards their so-called scholarly speech! Do you think the Almighty God needs such inferior and immoral methods for His statements to be accepted?!
3) The depth of enmity of this ex-member of the universal house of justice is obvious towards the Shiite clergymen. The scholars who were the pioneers of independence and campaign against the Colonial powers supporting Baha’ism. The scholar who acted the verse:
"الَّذِينَ يُبَلِّغُونَ رِسَالَاتِ اللَّهِ وَيَخْشَوْنَهُ وَلَا يَخْشَوْنَ أَحَدًا إِلَّا اللَّهَ وَكَفَى بِاللَّهِ حَسِيبًا"
“Who delivered the messages of Allah and feared Him, and feared none save Allah. Allah keepeth good account.”[Al-Ahzab/39]
4) why did they write their texts too bad and full of error that they had to revise it?! They confessed: “Many tablets were sent down and were dispersed every where. Their structures and contents were exerted and recited again by the holiest in order not to be opposed by spiteful people”
 Adib Taher Zadeh, the emergence blowing of the Excellency Bahaullah, Vol. 1, pp. 18-19.
 For more study refer to site: the center for studies and answering to the doubts, article: The scholars and great religious authorities of shism to campaign against Colonialism
 Hussein Ali Nouri (the Aqdas), Question and Answer epistle, the electronic copy, pp. 59-60.