With radiation poisoning, you can be dead and not even know it. The damage has been done already, but not yet felt. Our spiritual life can be damaged in the same way. We can be walking around, yet dead to our calling and connection to God without even knowing it. If by the grace of God, we can catch it in time, there is a way to renew spiritually. But would you even know if you need to? And if you did see the need, what would you do to renew?