longing to be sure of the things in which we trust. But it is not, and need not become, a problem. Just because I can’t prove my faith in God doesn’t mean that it is wrong. But unbelief can creep in during those moments of doubt. How? Think of faith as a lifeline to God like an umbilical cord, providing a channel through which his life-giving grace can reach you. Sever that link and faith will wither, just as a branch that is broken off a vine shrivels and dies (John 15:1–6). Have you read C.