Arabic is a Semitic language; other closely related Semitic languages include Amharic (Ethiopia) and Hebrew. More distantly related are languages like Berber (North Africa) as well as historic languages including Phoenician and ancient Egyptian.
English is the most commonly taught second language in the country and nearly everyone with a college education speaks at least minimal English.
Religion
Sunni Muslim is the official religion of Jordan as nearly 92% of the people adhere to this faith. Another 6% are Christian, primarily Greek Orthodox, and the final 2% of the population fall into various categories, primarily Shia Muslims and Druze.
Islam (the name of the religion, whose followers are called Muslims) is a monotheistic religion, whose holy book is called the Qur'an. The Qur'an is believed to be the word of God spoken through the prophet Muhammad from 609-632 CE (Common Era is preferred over AD (Anno Domini or "year of the Lord") since the Islamic world doesn't believe Jesus was the messiah). Islam believes Muhammad was the last prophet sent to earth by God, the last in a long line of prophets, which includes Moses, Abraham, and Jesus among others.