Hi there & welcome to CAF ~
This claim is NOT in the New Testament.
It is a muslim claim based on their Hadith books.
Their claim is that:
Isa will return and kill the anti-christ
Isa will destroy all churches and burn the cross
Isa will do away with tax and kill all of the swines
Isa will make Islam the global religion - no other religion will exit but Islam
Isa will then get married & have children
Isa will live on earth for 40 years, then die and be buried…
Please note that Isa/Issa is the Islamic Jesus, and NOT our Lord Jesus Christ.
[Mention] when Allah said, "O Jesus, indeed I will take you and raise you to Myself and purify * you from those who disbelieve and make those who follow you [in submission to Allah alone] superior to those who disbelieve until the Day of Resurrection. Then to Me is your return, and I will judge between you concerning that in which you used to differ. Al-Imran(3):55
158-Rather, Allah raised him to Himself. And ever is Allah Exalted in Might and Wise.
159-And there is none from the People of the Scripture but that he will surely believe in Jesus before his death. And on the Day of Resurrection he will be against them a witness. An-Nısa(4)
48-And He will teach him writing and wisdom and the Torah and the Gospel Al-Imran(3)
In Hadiths it is mentioned that: Jesus will come back and fight against Dejjal and evil. Jesus will teach the true Christianity that Jesus is merely a prophet(that means burn cross). Jesus will not negate Christianity but Jesus will correct the Christianity and Christianity will be same with Islam in faith.(There is only one, unique God)
In Al-Imran 48 verse god say "He will teach him writting and wisdom(that means Book in original text) … And Book imply Qur’an. So Jesus taught Torah and Bible and also he will come back to teach Qur’an either.(He will approve Qur’an).
In Gospels return of Jesus:
12 And, behold, I come quickly; and my reward is with me, to give every man according as his work shall be.
18 For I testify unto every man that heareth the words of the prophecy of this book, If any man shall add unto these things, God shall add unto him the plagues that are written in this book:
19 And if any man shall take away from the words of the book of this prophecy, God shall take away his part out of the book of life, and out of the holy city, and from the things which are written in this book. Revelation 22
Perhaps Jesus warn who added that into Gospels"Jesus is God, son of God"*