"Muhammad is not the father of any one of your men, but he is the Messenger of Allah and the Last of the prophets..."
Holy Qur'an (33:40)
Allah sent Prophet Muhammad [s] as a Messenger to all mankind and revealed through him the Holy Qur'an.
It was the Angel Gabriel [a], who brought the holy verses of the Qur'an to the Prophet by reciting parts until it was completed, which took twenty three years.
Allah tells us through the Holy Qur'an that Prophet Muhammad [s] is the last, and the seal, of all the prophets, that no prophet will come after him. The religion conveyed to the whole of mankind is Islam, being the seal of all religions.
Allah sent various prophets, whose number is reckoned to be one hundred and twenty four thousand, in order to guide and teach people their religion, in each period of time. So Allah, the Most Exalted, did not leave His servants without any messenger to advise them of their duties and the divine path to follow.
The first prophet whom Allah sent down to people was Adam [a], the father of all mankind, and the last Prophet sent was Prophet Muhammad [s]. The Holy Qur'an mentions the names of only the great prophets but not all the others. It quotes the names of twenty five: Adam, Idris, Noah, Hud, Salih, Lot, Abraham, Ismael, Isaac, Jacob, Shu'aib, Moses, Aaron, David, Solomon, Job, Dhul Kifl, Jonah, Elias, Zacharia, John, Jesus, Muhammad (May Allah's blessings be upon them all).
Muslims believe in all the messengers sent by Allah culminating with Prophet Muhammad [s], the last Prophet, who brought forth Islam, the ultimate religion. Allah, therefore, does not accept any religion other than Islam and the followers of Prophet Muhammad [s].