Next, what is the role of the Promised Messiah, may peace be upon him? Messiah is a title given to Hadhrat Isa (Jesus), may peace be upon him, and both the Holy Prophet may peace and blessings of Allah be upon him and Jesus, may peace be upon him, informed us of the appearance of the Messiah in the latter days. Jesus had prophesied that this appearance would happen ‘after the restitution of all things’ (Acts 3:19) which means after 'the coming of Islam' which was the 'restitution of all things'. Of course the Holy Qur’an is very clear that Hadhrat Isa, may peace be upon him, has passed away, like every other creation of Allah. Therefore we understand that Hadhrat Isa of the latter days is different from the Hadhrat Isa of the Israelites and so it will be a ‘spiritual return’ and not a ‘physical return’.
In fact, every religion has informed its followers that a person will appear in the latter days. Since the religion of Islam has come as the best and final of all the previous religions sent by Allah, therefore that ‘promised reformer’ has to be a Muslim. In this way, Hadhrat Mirza Ghulam Ahmad, may peace be upon him, claimed that he is that promised reformer.Therefore whatever religion a person is following; and they are awaiting for a person to come, Hadhrat Mirza Ghulam Ahmad, may peace be upon him, has claimed to be that person. He claimed to be a prophet from Allah, therefore if he fulfils all the criteria of a true Prophet found in their Holy Book (e.g. Holy Qur’an, Holy Bible, etc), then they should accept his claim. As he is a Muslim, then it means they will also have to accept Islam and thus all the followers of the religions will join Islam and this is how we understand that Islam will ‘prevail over all religions’ (Chapter 61, verse 10).
To sum up, as Imam Mahdi, his duty is to unite all the Muslims and guide them back to the true teachings of Islam and as the Promised Messiah, his duty is to unite all the religions and bring them to only one religion – Islam. This is what Allah wants and that is why Allah sent Hadhrat Mirza Ghulam Ahmad, may peace be upon him, and told him that he was the Imam Mahdi and Promised Messiah.