Glenn Beck told Bill O'Reilly tonight why he's attending a rally at Capitol Hill tomorrow to oppose the Iran nuclear deal, alongside Ted Cruz, Donald Trump and others.

Beck said that even though he doesn't see eye to eye with Trump on many issues, he's willing to stand with anyone who stands with Israel.

"It is time to be very, very clear on where we are," Beck said. "My message tomorrow is: We are at a point of choosing. We are at a fork in the road. And this is America's point of choosing. Historians will look back to this time."

O'Reilly pointed out that President Obama has secured the necessary Democratic votes in the Senate to push the controversial deal through, so it's already been chosen.

"They do not speak for me," Beck stated. "We have to stand up and let God hear us speak."

Watch more above.

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