Concept
Christianity and Islam are the two largest religions in the world, with 2.8 billion and 1.9 billion adherents, respectively. Both religions are considered as Abrahamic, and are monotheistic, originating in the Middle East. Christianity developed out of Second Temple Judaism in the 1st century CE. It is founded on the life, teachings, death, and resurrection of Jesus Christ, and those who follow it are called Christians. Islam developed in the 7th century CE. Islam is founded on the teachings of Muhammad, as an expression of surrender to the will of God. Those who follow it are called Muslims (meaning "submitters to God"). Muslims view Christians to be People of the Book, and also regard them as kafirs (unbelievers) committing shirk (polytheism) because of the Trinity, and thus, contend that they must be dhimmis (religious taxpayers) under Sharia law. Christians similarly possess a wide range of views about Islam. The majority of Christians view Islam as a false religion due to the fact that its adherents reject the Trinity, the divinity of Christ, the Crucifixion and Resurrection of Christ. Islam considers Jesus to be the al-Masih (Arabic for Messiah) who was sent to guide the Banī Isrā'īl (Arabic for Children of Israel) with a new revelation: al-Injīl (Arabic for "the Gospel"). Christianity also believes Jesus to be the Messiah prophesied in the Hebrew scriptures. However, far more central to the Christian faith is that Jesus is the incarnated God, specifically, one of the hypostases of the Triune God, God the Son. Belief in Jesus is a fundamental part of both Christian and Islamic theology. Christianity and Islam have different sacred scriptures. The sacred text of Christianity is the Bible while the sacred text of Islam is the Quran. Muslims believe that al-Injīl was distorted or altered to form the Christian New Testament. Christians, on the contrary, do not have a univocal understanding of the Quran, though most believe that it is fabricated or apocryphal work.