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Former Atlanta Fire Chief Kelvin Cochran says he lost his job because he shared his Christian beliefs in a self-help book.

Now Cochran is suing the city for wrongful termination, claiming discrimination and violation of his freedom of religion.

On "Fox and Friends" this morning, Cochran explained that his belief in the biblical definition of marriage is what caused the controversy and led to his firing.

Cochran's attorney, David Cortman, said that the city's argument is that Cochran failed to follow his employer's rules for outside employment in writing the book.

"What they're trying to say is that no citizen has a right to engage in free speech about their faith outside of work time, unless they get the permission from the government first," Cortman said. "The only permission slip the chief needs is the First Amendment."

Cochran said that freedom of speech and freedom of religion are guaranteed to all Americans, and that's why he's taking legal action.

"Tolerance is a two-way street," Cochran said. "It's respecting the beliefs and conscience of all Americans. And that's what I stood by."

"I want to be vindicated from the injustice that was committed against me by the city of Atlanta. No American should have to be forced to make a choice between living out their faith and keeping their job."

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