Islam teaches that Jesus brought revelation to his people in the form of the Injeel (Gospels). Muslims believe that the original teachings of Jesus called upon people to believe in One God and follow His commandments, but that these revelations became distorted. Muslims believe that the later interpretations of Jesus' mission, by Paul and others, essentially changed his pure and simple message.
According to the Muslim faith, the revelations that Jesus gave to his followers can no longer be found; the Bible of today does not accurately reflect his mission and teachings. That is, Muslims believe in the “Gospel according to Jesus,” not according to Matthew, Mark, Luke, John, or anyone else. While the New Testament contains many verses and stories that Muslims may find to be true, the book itself is not considered by Muslims to be God's revelation. Any contradictions between the Bible and Islamic teachings are viewed as man-made elements introduced after Jesus' departure.
Most of the disagreements between Muslims and Christians center on the person and role of Jesus. Muslims believe Jesus was an important link in the long line of prophets who brought God's message of monotheism to the world, and they find that Christian teachings over-exalt Jesus above what God intended his role to be.
Despite the theological differences between Christianity and Islam, Muslims try to focus on the commonalities between themselves and the People of the Book, particularly the Christians. The Qur'an reminds, “Nearest among them in love to the believers will you find those who say, ‘We are Christians.’ Because among these are men devoted to learning, and men who have renounced the world, and they are not arrogant” (Qur'an 5:82). Muslims and Christians would all agree that this is how Jesus wanted his followers to be.