Native speakers of Arabic, residing in Northern Africa and Middle East speak different versions of Arabic. These versions differ from place to place. These versions at times are not intelligible with each other. So people use some medial language that has common features of all versions to communicate. Standard Arabic is widely taught in schools and colleges and also used as the language of communications in offices and work places too.
‘Old north Arabian’, a dialect group, which is attested in Pre-Islamic Arabic inscriptions of the fourth century, has only one surviving member – ‘the Classic Arabic’. Modern standard Arabic is derived from the Classic Arabic. Since the day if birth of Islam in the seventh century, Classic Arabic has been its literary and liturgical language.
Many other languages use words whose language of origin is Arabic. During the middle age Arabic was very much used in Europe for the study of culture, science, mathematics and physics. Mostly Mediterranean languages such as Spanish, Portuguese, Maltese, and Sicilian use many Arab words in their dialect. This may be mainly because of close relations between Arab and European civilizations and the Arab rule in the Iberian Peninsula (extreme southwest of Europe, modern-day Spain, Portugal, Andorra and Gibraltar and some portions of France) for 700 years.
On the other hand Arabic has also borrowed words from other Semitic languages such as Hebrew, Latin and Syrian. It has also recently borrowed some words from modern day European languages.
Arabic is associated with Islam much often. The language of Quran is Arabic. But the language is also spoken by Arabic Christians, Arab Druze, Iraqi Mandaeans and Mizrahi Jews. Majority of Muslims cannot speak Arabic but they can read the script that is written in their religious book. Muslims often consider Arabic as the language that God chose to speak to humans with.
Arabic is apparently not the easiest of the languages. But it has a great history and tradition. It is one of the most captivating languages that if you learn will ever speak. Not many whose first or second language is not Arabic can speak Arabic. But those who do are proud of it.