When I was growing up, I heard a similar statement from a lot of people, "I don't talk about God or go to church. I don't need to. My faith is personal". At some level, it made sense. Unfortunately, it was an incorrect worldview. Our faith is a relationship. Our relationship with God and His relationship with us. But it is also about sharing that relationship with others who we have a relationship with. We need to believe. But we also need to declare and share.
Lord, please give us the boldness to have a relationship with you and to also share it with others.