"And We send down from the Quran that which is a healing and a mercy to those who believe, and it increases the zaalimoon (wrongdoers) nothing but loss."
[Al-Israa 17:82]

" And indeed, We have bestowed upon you seven of al-Mathaani (the seven repeatedly recited verses, i.e. Soorat al-Faatihah) and the Grand Quran. "
[Al-Hijr 15:87]

Alif Laam Raa. A book which we have revealed to you (Muhammad) so that you may lead the people from out of the darknesses into the light by their Lord's leave, to the path of the Almighty, the Praiseworthy.
[Ibrahim 14:1]

Uthman bin Affan (may Allah be pleased with him) narrated that the Prophet (peace be upon him) said, "The most superior among you (Muslims) are those who learn the Quran and teach it."
[Bukhari: Book 61: Hadith 546]

"Then High above all be Allah, the True King. And be not in haste (O Muhammad) with the Quran before its revelation is completed to you, and say: "My Lord! Increase me in knowledge."
[Ta-Ha 20:114]