But Ms. White cannot be easily categorized as either a political asset or a liability. She has a large following among Christians who believe in the “prosperity gospel,” which teaches that God blesses people he deems to be of strong faith with wealth, good health and other gifts.

But many other Christians consider these beliefs to be heresy. And Ms. White’s presence in the top tier of Mr. Trump’s coterie of informal religious advisers has long been a source of contention with many evangelical Christians.

Despite this controversy, Ms. White has remained in good standing with Mr. Trump, who invited her to deliver an invocation at his inauguration and has hosted her as a guest at the White House numerous times. In a recent interview with The New York Post to promote her new book, she said she sometimes visits the White House several times a week.