Here is a deep dive into how Christianity became an imbedded tool for the Republican party to be used politically for supporting Israel.
Executive Intelligence Review 2005
The Christian Coalition:
The Nature of the Beast
by Anton Chaitkin
larouchepub.com/other/2005/3216_christian_coalition.html
Ralph Reed-created Christian Coalition (with televangelist Pat Robertson as its public face) has been the most significant element in the Religious Right
In the Spring of 1984, William F. Buckley's top lieutenant, Marvin Liebman, devised what came to be known as "Students for America," and put Ralph Reed in charge of it.
Liebman was a bullied, fearful child, a victimized Jew who became a Communist and a homosexual, and a Zionist in the camp of the Jabotinskyites who formed the Israeli right.
After North Carolina Jewish voters were inundated with anti-Helms messages, Helms was informed that he would have to "get with" the pro-Israel program. The gangster lawyer Roy Cohn, Bill Buckley's pal, muscled into the Helms campaign planning. Cohn was to see to it that wealthy New York Jews did not fund Helms' election opponent, if Helms joined with the Israel/End-Times alliance.
The Rev. Jerry Falwell, who had just gotten a private jet and the Jabotinsky medal from Israeli Prime Minister Menachem Begin, brought his Moral Majority cadres into a door-to-door crusade for Helms.
And televangelist Pat Robertson, a fanatical Middle East war advocate, was an avid supporter of Helms, who managed to secure re-election with this spiritual support.