Glenn Beck will not support Donald Trump if he wins the GOP presidential nomination.

In a Monday evening interview on CNN, the radio personality also said he preferred Sen. Marco Rubio (R-FL)–who was the face of the Gang of Eight’s massive comprehensive amnesty bill–over Trump and even mocked Trump for having a “special place” to keep all of the Bibles that people send him.

Host Don Lemon asked Beck, “If Donald Trump is the nominee, will you support him?”

Beck, who over the weekend declared on left-leaning NPR that Trump was not a conservative, replied, “No.”

“I’m not a Republican,” Beck said. “I don’t care what happens to the Republican Party. I’m a Constitutionalist.”

On immigration, Beck said that Trump was “basically saying put smart people in to run the big government better.”

Beck claimed that “a Constitutionalist does not agree with that.” Beck never explained why Trump was not “Constitutional conservative” for wanting the federal government to enforce immigration laws.

“We don’t have government plan things and we don’t have government run things,” he said. “That’s why I say that Donald Trump is a progressive republican. He is a big-government republican. And I don’t know why these conservatives are standing up for him.”

When Lemon mentioned that Trump’s second favorite book is the Bible, Beck snickered and referenced an interview in which David Brody asked Trump what he does with all of the Bibles that he receives.

“If they’re sending you bibles it’s probably because it’s like, dude, you should read this book,” Beck said. “You’re a little off track.”

Beck wondered “who is sending Trump Bibles” and then laughed while saying Trump “went into this long answer of how he has a special place for Bibles because he would never want to do anything wrong with a Bible.”

“And that’s just, I mean, it was craziness,” Beck said.

In a 2011 interview with the Christian Broadcasting Network’s David Brody, Trump said that he gets sent “Bibles by a lot of people. We keep them at a certain place. A very nice place. But people send me Bibles. And you know it’s very interesting. I get so much mail and because I’m in this incredible location in Manhattan you can’t keep most of the mail you get.”

“There’s no way I would ever throw anything, to do anything negative to a Bible, so what we do is we keep all of the Bibles,” Trump continued. “I would have a fear of doing something other than very positive, so actually I store them and keep them and sometimes give them away to other people, but I do get sent a lot of Bibles and I like that. I think that’s great.”

Beck said he liked candidates like Carly Fiorina, Wisconsin Governor Scott Walker, Rubio, Sen. Ted Cruz (R-TX), and Rand Paul (R-KY) and said if “Trump is the candidate, then I believe that the Republicans have just made the same kind of mistake that the Democrats made, where it just got into a cult of personality, and there is no real reason.”