form of both the Written and Oral Torah; historically, this assertion was challenged by various groups. The Jewish people were scattered after the destruction of the Temple in Jerusalem in 70 CE. Today there are about 13 million Jews, about 40 per cent living in Israel and 40 per cent in the United States. The largest Jewish religious movements are Orthodox Judaism (Haredi Judaism and Modern Orthodox Judaism), Conservative Judaism and Reform Judaism. Christianity Christianity is based on the life and teachings of Jesus of Nazareth (1st century) as presented in the New Testament. The Christian faith is essentially faith in Jesus as the Christ, the Son of God, and as Savior and Lord. Almost all Christians believe in the Trinity, which teaches the unity of Father, Son (Jesus Christ), and Holy Spirit as three persons in one Godhead. Most Christians can describe their faith with the Nicene Creed. As the religion of Byzantine Empire in the first millennium and of Western Europe during the time of colonization, Christianity has been propagated throughout the world via missionary work. It is the world's largest religion, with about 2.3 billion followers as of 2015. The main divisions of Christianity are, according to the number of adherents: The Catholic Church, led by the Bishop of Rome and the bishops worldwide in communion with him, is a communion of 24 Churches sui iuris, including the Latin Church and 23 Eastern Catholic churches, such as the Maronite Catholic Church. Eastern Christianity, which include Eastern Orthodoxy, Oriental Orthodoxy, and the Church of the East. Protestantism, separated from the Catholic Church in the 16th-century Protestant Reformation and is split into thousands of denominations. Major branches of Protestantism include Anglicanism, Baptists, Calvinism, Lutheranism, and Methodism, though each of these contain many different denominations or groups. There are also smaller groups, including: Restorationism, the belief that Christianity should be restored (as opposed to reformed) along the lines of what is known about the apostolic early church. Latter-day Saint movement, founded by Joseph Smith in the late 1820s. Jehovah's Witnesses, founded in the late 1870s by Charles Taze Russell. Islam Islam is a monotheistic religion based on the Quran, one of the holy books considered by Muslims to be revealed by God, and on the teachings (hadith) of the Islamic prophet Muhammad, a major political and religious figure of the 7th century CE. Islam is based on the unity of