إِنَّآ أَنزَلۡنَـٰهُ قُرۡءَٲنًا عَرَبِيًّ۬ا لَّعَلَّكُمۡ تَعۡقِلُونَ

“Verily, We have sent it down as an Arabic Qur’an in order that you may understand.” (Surah Yusuf: 2)

Ibn Kathir 774AH [May Allah have mercy on him] said in his Tafsir of this verse:

وذلك لأن لغة العرب أفصح اللغات وأبينها وأوسعها ، وأكثرها تأدية للمعاني التي تقوم بالنفوس; فلهذا أنزل أشرف الكتب بأشرف اللغات ، على أشرف الرسل ، بسفارة أشرف الملائكة ، وكان ذلك في أشرف بقاع الأرض ، وابتدئ إنزاله في أشرف شهور السنة وهو رمضان ، فكمل من كل الوجوه

“The Arabic language is the most eloquent, plain, deep and expressive of the meanings that might arise in one’s mind. Therefore, the most honorable Book, was revealed in the most honorable language, to the most honorable Prophet and Messenger , delivered by the most honorable angel, in the most honorable land on earth, and its revelation started during the most honorable month of the year, Ramadan. Therefore, the Qur’an is perfect in every respect.”