Isn't this already happening?
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This hadith is very enlightening:
Allah's Apostle said, "The Hour will not be established (1) till two big groups fight each other whereupon there will be a great number of casualties on both sides and they will be following one and the same religious doctrine, (2) till about thirty Dajjals (liars) appear, and each one of them will claim that he is Allah's Apostle, (3) till the religious knowledge is taken away (by the death of Religious scholars) (4) earthquakes will increase in number (5) time will pass quickly, (6) afflictions will appear, (7) Al-Harj, (i.e., killing) will increase, (8) till wealth will be in abundance... so abundant that a wealthy person will worry lest nobody should accept his Zakat, and whenever he will present it to someone, that person (to whom it will be offered) will say, 'I am not in need of it, (9) till the people compete with one another in constructing high buildings, (10) till a man when passing by a grave of someone will say, 'Would that I were in his place (11) and till the sun rises from the West. So when the sun will rise and the people will see it (rising from the West) they will all believe (embrace Islam) but that will be the time when: (As Allah said,) 'No good will it do to a soul to believe then, if it believed not before, nor earned good (by deeds of righteousness) through its Faith.' (6.158) And the Hour will be established while two men spreading a garment in front of them but they will not be able to sell it, nor fold it up; and the Hour will be established when a man has milked his she-camel and has taken away the milk but he will not be able to drink it; and the Hour will be established before a man repairing a tank (for his livestock) is able to water (his animals) in it; and the Hour will be established when a person has raised a morsel (of food) to his mouth but will not be able to eat it."
Narrated by Abu Huraira
Sahih Bukhari - Volume 9, Book 88, Number 237
Sir jee, I do not have references ready like you, but what I remember (Ready to take corrections).
When Hazrat Isa will come second time, he will endorse Islam and correct Christians believes and Christians will follow him under Islamic Muslim umbrella, as Hazrat Isa will pray behind Imam Mehdi, so Christians and Muslims will be one following same path. then hazrat isa will kill Dajjal etc....you know better then me...cant remember too much and do not want to write something wrong.
this is the reason / time Christians and Muslims will fight together against Jews and victory will be achieved.
a quick search carried me to this, you can read it and correct me.
"Bediuzzaman heralds that Jesus
will come to earth at such a period when disbelief will dominate the earth. As stated in the following words of Bediuzzaman, in his second coming to earth, Jesus
will rule with the Quran and eliminate all bigotry in Christianity. Uniting against disbelief, Christians who have embraced Islam and Muslims will prevail over the disbelieving ideologies by the guidance of the Quran. The related section in the Risale-i Nur follows:
At that point when the current appears to be very strong, the religion of true Christianity, which comprises the collective personality of Jesus
, will emerge. That is, it will descend from the skies of Divine Mercy. Present Christianity will be purified in the face of that reality; it will cast off superstition and distortion, and unite with the truths of Islam. Christianity will in effect be transformed into a sort of Islam. Following the Quran, the collective personality of Christianity will be in the rank of follower, and Islam, in that of leader. True religion will become a mighty force as a result of its joining it. Although defeated before the atheistic current while separate, Christianity and Islam will have the capability to defeat and rout it as a result of their union. Then the person of Jesus
, who is present with his human body in the world of the heavens, will come to lead the current of true religion, as, relying on the promise of One Powerful Over All Things, the Bringer of Sure News has said. Since he has told of it, it is true, and since the One Powerful Over All Things has promised it, He will certainly bring it about. [3]
In all his descriptions of the second coming, Bediuzzaman indicates that Jesus
will remove all the systems of disbelievers in that period. He further adds that he will receive great support from Muslims. Jesus
will act as a Muslim and pray behind the imam of the Muslims, and work together with the right-acting people from the Islamic world, and will assume leadership in spreading the Quran and its teachings, and remove the ongoing violence of the system of the disbelievers:
It will be the truly pious followers of Jesus
who will kill the gigantic collective personality of materialism and irreligion which the Dajjal will form - for the Dajjal will be killed by Jesus'
sword - and destroy his ideas and disbelief, which are atheistic. Those truly pious Christians will blend the essence of true Christianity with the essence of Islam and rout the Dajjal with their combined strength, in effect killing him. The narration: "Jesus
will come and will perform the obligatory prayers behind the Mahdi and follow him," alludes to this union, and to the sovereignty of the Quran and its being followed. [4]"
https://www.islamicity.org/5640/jesus-will-return/
quoting the link so you can check in details. as I said can not remember too much, its may be almost 25 -30 years ago I attended these lectures.