One of the reasons that the evangelical Christians are so enamored by Trump is that they are heavily influenced by wing nuts like Jerry Falwall, who once said, "the idea that religion and politics don't mic was invented by the Devil to keep Christians from running their own country".
Jerry Falwell Sr. founded a megachurch in Lynchburg, Virginia, in 1956, Liberty Christian Academy in 1967, and Liberty University in 1971. He also founded the Moral Majority in 1979. It played a key role in the mobilization of conservative Christians as a political force and particularly in Republican presidential victories throughout the 1980's. If you read through his biography, you'll notice that he has a lot of wacky ideas. Upon his death in 2007, his son Jerry Jr. took over as president.
Trump addressed Liberty University as a candidate in January 2016, where he famously misquoted "2 Corinthians" instead of Second Corinthians - a mistake that he blamed on his speechwriter. He also addressed the graduating class in the spring of 2017, shortly after he was sworn in.
If you read Jr's biography, you'll notice that he is even crazier than his dad:
1) he doesn't believe in gun control
2) he called Trump "one of the great visionaries of our times"
3) he compared Trump to Winston Churchill
4) after Charlottsville, he said that Trump doesn't have a racist bone in hid body
5) Asked in a January 2019 interview, "is there anything President Trump could do that would endanger that support from you or other evangelical leaders?", Falwell answered, "no.
6) In April 2017, Falwell referred to Trump as the "dream president" for evangelicals, and cited "uniting with Israel" and appointing "people of faith" in his administration as the reason why evangelicals support Trump
7) In November 2016, Falwell said that President-elect Donald Trump offered him the position of United States Secretary of Education
8) In 2019, Reuters reported that Falwell asked Trump fixer Michael Cohen for a personal favor: to help get rid of photos described by Cohen as being "personal" and of the sort that would typically be kept “between husband and wife.”