This belief about Anti Christ and Third Temple, also explains part of the new overwhelming friendliness and sympathy some Evangelical Christians (
note not all) have acquired for Jews.
The Christians spent two millennia hating Jews simply for the theological reason that Jews hadn't accepted as their Messiah the guy the Christians made their Messiah. Worse, they appeared to have murdered Him! Although its unfair to blame the Jews for that, given Jesus had supposedly come to "die" to save the world, and the Jews' actually helped Him achieve that end, but of course, Medieval Christians were too thick to get that.
This new overwhelming friendliness and love that many Christians profess for Jews and their ardent support for Israel actually has a devious motive behind it- they think building the Third Temple will usher in Christ's Second Coming- who of course, will send Jews right off to Eternal Torture in Hell!
Some Christians
love the Jewish people, and support Israel, only with the ultimate desire to see Christ come and drag them (and other rabble like Muslims, Hindus, non believers etc) to Eternal Hellfire! Such gleeful anticipation of permanent torture for people you claim to love! Christian Love indeed!
Thats' also why many of them would be extremely glad to see all Palestinians including babies killed, even if a peaceful solution is possible, for until Isreal flows with blood, Christ won't deign to arrive. So they'd support Israeli illegal settlements and violence, more than many Jews do.

Voltaire rightly said, "Those that can get you to believe in absurdities, can get you to commit atrocities."