Dr. Carson has advice for supporters of former President Donald J. Trump ahead of Iowa's Jan. 15 caucus.

"The Deep State is terrified because he [Trump] now knows who they are," the neurosurgeon told a crowd at a Team Trump Faith Event at Grace Baptist Church in Marion, Iowa.

"The system doesn't want to be fixed. That's why they will do anything to keep him out of office," said Dr. Carson, who previously served as President Trump's Secretary of Housing and Urban Development.

"Be looking for dirty tricks," he added.

"They will be coming up with all kinds of things, but you know what? God is in charge," he continued.

At one point, Dr. Carson's phone went off. It happened not too long after he spoke about irregularities with poll watchers and signature matching for mail-in ballots—two issues that some supporters of former President Trump raised after the 2020 election—as well as a range of other topics important to President Trump's base.

"It's the FBI," he quipped, drawing laughter.

While some of Dr. Carson's language resonated with an audience sick of feeling politically persecuted, his message wasn't all doom and gloom.

He began by rejecting cynicism about the possibilities for those who work hard and prize education.

"There's so many people who say the American Dream is dead. It's alive and well," he said.

Race, he argued, is no impermeable barrier to prosperity.