Coming up this evening on "Piers Morgan Tonight," actor and evangelist Kirk Cameron sits down for a candid and engaging discussion on politics, faith, values, and morals.

Best known for his role as the lovable Mike Seaver on television's "Growing Pains," Cameron is now a 41-year-old father of 6, and a Born Again Christian. Against a backdrop of the upcoming election, host Piers Morgan asks Cameron where he stands on various hot button social issues, including gay marriage:

"Marriage is almost as old as dirt, and it was defined in the garden between Adam and Eve. One man, one woman for life till death do you part. So I would never attempt to try to redefine marriage. And I don't think anyone else should either," explains Cameron. "So do I support the idea of gay marriage? No, I don't."

Joining Morgan in person, Cameron goes on to explain his views on homosexuality:

"I think that it's - it's - it's unnatural. I think that it's - it's detrimental, and ultimately destructive to so many of the foundations of civilization."

Tune in to "Piers Morgan Tonight" at 9 p.m. ET/PT as the host of the upcoming documentary "Monumental" reveals his views on abortion, and details what he'd do if one of his children came to him and said "I'm gay."

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