The Quran is, according to Islamic belief, word for word the unaltered message that Muhammad received from God piece by piece over a period of 23 years through the angel Gabriel, and proclaimed faithfully down to the letter. The Quran is therefore valid for the peoples of all times. Any other message received by an earlier prophet was valid only for a particular people at a particular time.
The Quran is a guide to a joyful, happy and successful life. The prophets before Muhammad – including Jesus (ʿĪsā ibn Maryam) – are regarded in Islamic belief as Muhammad’s forerunners. In a sense, they acknowledged Muhammad’s prophetic leadership in advance.
Here is a list of some claims that many people have misunderstood or that have been distorted by anti-Islamic media: