This family of duck hunters is used to ruffling a few feathers when it comes to speaking their mind about their faith. But "Duck Dynasty’s" Willie and Korie Robertson aren’t backing down when it comes to the things they believe in.

“God and our faith is what sustains us,” Korie told FOX411. “It's what makes our life good.”

And good their lives have been. The reality show stars also have their own platinum Christmas album, books on the New York Times bestseller list and now Korie and Willie have made it to the big screen with a cameo in the upcoming film “God’s Not Dead.”

The secret to their success? Recognizing that God comes first and that the fame could go away at any second.

“God's blessed us with a lot of opportunities at this point,” Willie told FOX411. “Just like the movie 'God's Not Dead,' there's that element of faith that you have to have faith.”

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In the upcoming film, Willie and Korie play themselves in a scene where they are bombarded outside of church by a reporter who questions their faith, asking them how they feel about people who say they are offended by the prayer scenes on the A&E show.

“We're not trying to offend anybody,” Willie states in the film. “As far as my praying to Jesus, my life and my whole eternity belongs to God. The money, fame, success, temporary. Even life is temporary. Jesus, that's eternal."

Willie and Korie said the scene rang true to them, as the Robertson family is used to having to defend their faith.

“I think in our every day lives there's always this opportunity to explain your faith to people who are not believers and people want to know how you live your life,” Willie said.

But the couple said that while many may look down on their strong beliefs and Christian values, they aren’t backing down anytime soon.

“Well I guess [‘Duck Dynasty] is the most watched reality show in the history of cable so if that comes along with being religious that's fine,” explained Willie. “Maybe other people should try and start making shows like that.”

And while the Robertsons stand firm in their faith, they aren’t trying to be pushy when it comes to their faith.

“We don't feel like we're shoving any religion down anyone's throats,” Willie said. “We're just being ourselves, it's positive. To us, just saying a prayer at the end [has had] a huge impact, but in our lives saying a prayer's not that big a deal. We do that all the time.”

God is a top priority for the Robertsons now, but faith is not something that always came naturally to them.

“In our own lives, we were at all different stages [in our faith],” Willie revealed. “My father didn't come to the Lord until he was in his late 20s. It’s not like a cake mix where you can just put it all together and it'll turn out perfectly. You got to let God do the work.”

So what’s next for the Robertsons?

“Well, we're probably going to buy an island somewhere, that's our next plan,” Willie jokingly told FOX411.

But they aren’t pouring themselves margaritas on the beach just yet. They still have a message of faith in God to share with their fans.

“Don’t let someone bully you into not standing up for your beliefs,” Korie said.

Faith & Fame is a regular column exploring how a strong belief system helps some performers navigate the pitfalls of the entertainment industry.