Why is the Quran in Arabic?

Why is the Quran in Arabic?

The Quran is in the Arabic language because Muhammed, the Messenger of Allah and the first Muslims were Arabs (Fussilat 41:44). Every messenger (Rasoul) was sent in the language of his own people (Ibrahim 14:4). That the languages are different, is a sign of Allah (al-Rum [30] 22). The common belief that the language of Paradise is Arabic, is not based on a trustworthy source (Bekir Topaloglu, “Cennet (Djannah),” Islamic Encyclopedia of Diyanet, VII, 383).