Why did Imam believe that the gate to divine knowledge would be shut for ever without the Quran?

Iran hosts 38th Intl. Qur'an competitions

These ear-soothing voices narrate divine verses from Muslims’ holy book, Qur'an. The recitations are performed as part of the 38th International Qur'an Competition in Iran.

The purpose of Mab'ath descent of Divine Inspiration and the Qur’an; Imam Khomeini defined

Imam Khomeini stressed the need to follow the footsteps of the holy prophet of Islam and his pure progeny in all aspects of life.

Prophet of Mercy: A book by Iran's Leader in age of Islamophobia

Translated into Multiple languages, the 196-page English version elaborates on the life of Muhammad (PBUH), the holy Prophet of Islam.

Imam Khomeini: The Muslims necessarily acknowledge the Prophet of Islam as the last and final ...

Sahifeh-ye-Imam, Vol 13, Page 288

Imam Khomeini: If the Muslims of the world endeavor to spread this aspect of the Qur’an which is ...

Sahifeh-ye-Imam, Vol 17, Page 408

Millions of pilgrims march toward Kadhimiya to mark martyrdom anniversary of 7th Shia Imam

Black-clad pilgrims have marched in droves towards the holy city of Kadhimiya in northwestern Baghdad amid tightened security, as part of a weeklong procession to commemorate the martyrdom anniversary of the seventh Shia Imam.

Divine savior will accomplish mission of all divine prophets

Imam Khomeini through his historic speeches described the decisive role of twelfth infallible known as savior in promoting justice in all dimensions among mankind societies.