American Evangelicals are proselytizing this idea everywhere that Israel is the biblical Israel and those who honor Israel will be blessed, Jews come back Jesus come back etc Even Japanese Korean Evangelical Christians were signing bombs to be dropped on Gaza. The irony of Japanese doing that
This theology is called Dispensationalism and is rooted in the writings of John Nelson Darby.
https://en.m.wikipedia.org/wiki/Dispensationalism
But this theology really kicked off by a guy name C.I Scofield whose annotated Bible, Scofield Reference Bible, popularized the idea in U.S that creation of Israel and Jews coming back to build the Temple is necessary for Jesus to come back. After which he will give them (Jews) a final chance to believe in him otherwise...
Scofield used Doctor of Divinity along with his name but no seminary in U.S has his name in his records. He was allegedly very close to a hardcore Zionist lawyer in New York who funded his career. The biography on his life discusses this in detail.