In this study, we set out to explore the secret of the Qur’an’s hypertextual nature and to examine its influence on the Persian language, as well as its role as the hidden text underlying Persian literature, especially Persian poetry and its great masters: Ferdowsi, Rumi and Hafez. Among them, one became the possessor of the Qur’an of the Persians, another wove the Persian Qur’an into the fabric of his speech, and the third came to be known as the tongue of the unseen. We sought to explain these relationships and ultimately to show how, despite its relative youth, and in contrast to the ancient and richly historical Egyptian hieroglyphic language, traces of which can be found in the Qur’an and in Arabic, particularly in the disjointed letters at the beginning of certain Qur’anic chapters, Persian grew and matured into the second language of the Islamic world. We also demonstrated that, up to the 8th century AH, the Iranian engagement with the Qur’an manifested primarily in Arabic: first in theological works concerning the question of whether God’s speech is eternal or created, and later in books on the miraculous nature of the Qur’an; and second in Persian, particularly in translations of the Holy Qur’an. These modes of engagement differed in each language depending on the audience’s level and type of knowledge. In the past century, especially after the Islamic Revolution, Iranians’ engagement with the Qur’an has taken various forms across different fields.