The disclosure of the knowledge (its detailed explanation) is from Allah, the Aziz, the Hakim!
Al-muntakhab fi tafsir al-Qur'an al-Karim
It -the Quran- is a Book that is emphatically revealed by Allah in complete glory, featuring Him as the guide, and who could be a better guide than Allah, AL-Aziz (the almighty), AL-Hakim (the Wise