The revelation of the Qur'an is from Allah, the Exalted in Might, (39:1)

Almuntakhab Fi Tafsir Alquran Alkarim

It -the Quran- is a Book emphatically revealed by Allah in complete glory featuring Him as the guide, and who could be a better guide than Him, AL-Aziz (the Almighty) AL-Hakim (the Source of wisdom and wise mysterious dispensations)

Tafseer Tafheem-ul-Quran by Syed Abu-al-A'la Maududi

(39:1) The revelation of this Book is from Allah, the Most Mighty, the Most Wise. *1

The revelation of the Qur'an is from Allah, the Exalted in Might, meaning

*1) This is a brief introduction to the Surah which only stresses the point that the Qur'an is not Muhammad's word, as the disbelievers assert, but it is Allah's Word, which He Himself has sent down. Along with this, two of Allah's attributes have been mentioned to warn the listeners of two realities so that they do not underestimate this Word but understand its full importance: (1) That Allah Who has sent it down, is All-Mighty; that is, He is so powerful that no power can prevent His will and decisions from being enforced and none can dare resist Him in any way; (2) that He is All-wise; that is, the guidance He is giving in this Book, is wholly based on wisdom, and only an ignorant and foolish person can turn away from it. (For further explanation, sec E.N. 1 of Surah As-Sajdah).
 

The revelation of the Qur'an is from Allah, the Exalted in Might, meaning in Urdu

اِس کتاب کا نزول اللہ زبردست اور دانا کی طرف سے ہے