"Verily, this Quran guides to that which is most just . . ."
[Al-Israa 17:9]

"And We have sent down to you the Book (the Quran) as an exposition of everything, a guidance, a mercy, and glad tidings for those who have submitted themselves (to Allah as Muslims)"
[Al-Nahl 16:89]

"And (it is) a Quran which We have divided (into parts), in order that you might recite it to men at intervals. And We have revealed it by stages."
[Al-Israa 17:106]

"Verily, We, it is We Who have sent down the Dhikr (i.e. the Quran) and surely, We will guard it (from corruption)"
[Al-Hijr 15:9]

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]