Catholics know how the Nicene Creed starts out: “I believe in God the Father Almighty maker of heaven and earth, and of all things visible and invisible.” Did you ever contemplate on the “invisible” part of the creed?
Think about what you are stating your belief to. All the “invisible” things that God has created. What invisible things?
For one, faith. And for another, God Himself. Do you believe in God? We don’t see God. He is not visible in the literal sense. For we walk by faith, and not by sight.