A Muslim's belief in Islam is not complete or acceptable unless he declares belief in the truth of all the previous Prophets and Messengers of Allah . A Muslim must believe that all the previous Prophets and Messengers were sent for specific groups of people during a specific time, whereas the Message of Islam is universal and for all times and places until the Day of Requital. Allah says in the Glorious Qur'an:
The Messenger believes in what has been revealed to him from his Lord, as do the men of faith. Each one (of them) believes in Allah, His angels, His Books, and His Messengers. "We make no distinction (they say) between one and another of His Messengers. And they say: "We hear, and we obey, (we seek) Your forgiveness, our Lord, and to You is the return .
Muslims are required to deliver the Message of Islam to others, but never to force or compel others to accept it, as Allah, the Exalted, says in the Glorious Qur'an:
(Let there be no compulsion in religion.)