Over the years, I have become convinced that in the Christian life at least two things are certain: God never changes, and we are always changing.
Our lives as Christians are a continual transition from one place to another, one level to another, one understanding to another. The purpose of spiritual light is to bring us into change and growth. The more light we have, the more change we experience; and the more we change (for the better), the more we are brought into higher levels of glory. Unless we are in constant transition, we will stop somewhere along the way and settle down. The Christian life is a frontier. God did not call us to be settlers, but to be pilgrims and pioneers.