Islam is a monotheistic religion whose holy book is the Koran, a book considered by its followers to be the strict word of God. Islam began with the prophet Muhammad’s teachings in about 600 A.D. in the holy city of Mecca. A follower of Islam is called a Muslim. About 90% of Middle Easterners are Muslim.
Christianity is a monotheistic religion based on the life and teachings of Jesus Christ as presented in the New Testament, the second half of Christianity’s holy book, the Bible. Christianity is the world's largest religion, with approximately 2.2 billion followers, known as Christians. Most Christians believe that Jesus is the Son of God, fully divine and fully human, and the savior of humanity prophesied in the Old Testament, the first half of the Bible. Consequentially, Christians refer to Jesus as Christ or Messiah. About 5% of Middle Easterners are Christian.
Judaism is a monotheistic religion, with its main inspiration being found in the Hebrew Bible which has been explored in later texts, such as the Talmud. Judaism is considered by religious Jews to be the expression of the covenantal relationship God established with the Children of Israel. About 3% of Middle Easterners are Jewish.