The Holy Quran is the sacred scripture of Islam and the language in which it has been revealed is Arabic. The Arabic language has a significant place in the Islamic tradition; so, the Quran, being the Word of Allah, must also be in Arabic as it is the language of Prophet Muhammad (may the peace and blessings of Allah be upon him), the primary language of Arab tribes, and the language in which the Quran was revealed.
Firstly, the Quranic Arabic language has been known for its eloquence, richness, and depth. Arabic is a poetic language with a unique grammatical structure and is one of the most ancient and noble languages in the world. It is highly descriptive, and the precision and subtlety of its vocabulary are unmatched. The Quranic Arabic language is so rich that it takes several translations to explain its true meaning; and even then, some of the subtlety and elegance are lost. Thus, translating the Quran to other languages would not fully convey the true meaning of the text, and it would not be in line with the original revelation of the Holy Book.
Secondly, the language of the Quran is a symbol of unity among Muslims. The Arabic language has acted as an agent of stability and unity among Muslims for centuries. Even though Muslims are diverse in culture and ethnicity, the Arabic language is a common thread that ties all Muslims together. Regardless of their origins or mother tongues, Muslims all over the world can read, understand, and communicate with the Quran through the Arabic language.
Also, the Quran is a legacy that all Muslims share. The Quran is not just a book. Muslims believe that the Arabic language and Quranic Arabic language, in particular, are a gift from Allah that was bestowed upon Prophet Muhammad (may the peace and blessings of Allah be upon him) and subsequently passed down through generations of Muslims. It is, therefore, the responsibility of Muslims to preserve the Quranic Arabic language and to ensure that the Quran is passed down to future generations in its original form.
In conclusion, the Quran being in Arabic is crucial to the Islamic faith. The Arabic language is a poetic, expressive, and highly accurate language that is commonly referred to as the language of the Quran. It has helped to unify Muslims around the world despite their differences in ethnicity, culture, and language. Arabic is a language that is revered and considered sacred in the Islamic faith; hence, the Quran can only be in Arabic. The Quran is the eternal Book of Allah which was revealed to Prophet Muhammad (PBUH) in Arabic, and it will remain in its original form till the Day of Judgment.