Pastor Robert Jeffress, an evangelical adviser to President TrumpDonald John TrumpSally Yates: Moral fiber of US being 'shredded by unapologetic racism' Top Democrats demand security assessment of Trump properties Anti-Defamation League says 'send her back' chants 'the sound of illiberalism, intolerance' MORE, issued a blistering rebuke of Christians who oppose Trump.

In an interview Tuesday on the conservative Todd Starnes Radio Show, Jeffress called evangelicals who don't support Trump “spineless morons.”

“Let me say this as charitably as I can,” Jeffress said. “These ‘Never Trump’ evangelicals are morons. They are absolutely spineless morons and they cannot admit that they were wrong.”

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The pastor also compared evangelicals who do not support Trump's stance on abortion to German Christians who “remained silent” in Nazi Germany.

“We cannot afford to be like German Christians who, in the rise of the evil reign of Adolf Hitler, just remained neutered. They remained silent. And you saw what happened there,” he continued. “I think there’s a similar wave of godlessness that is rising in our country right now and we must push back against that tide.”

Jeffress, the head of megachurch First Baptist Dallas, has made a number of controversial comments about other religions, and was denounced by Sen. Mitt RomneyWillard (Mitt) Mitt RomneyTrump's no racist; he's an equal opportunity offender Lawmakers introduce bill to block U.S. companies from doing business with Huawei GOP put on the back foot by Trump's race storm MORE (R) last year, who called him a “religious bigot.”