Is Christianity, as we have known it, Christianity? Or is Christianity something larger, something bigger than we have realized? Isn’t the name itself limiting, suggesting that Truth is confined to history rather than to the present and future as well?
Suppose Christianity has barely scratched the surface of the meaning of the incarnation of God in Jesus Christ. Suppose that when Jesus said the kingdom is here that really is what he meant, and that His kingdom would grow just as other things grow. A seed is not apparently a tree, but after a long time that is what it can become. Do we really think that Christianity as historically defined is the Kingdom of God in all its fullness? Or that future generations will find themselves in no possession of truth beside that which we currently have?
If the kingdom of God is like a mustard seed then the fullness of the kingdom must be radically different in appearance than the humble beginnings. Who would ever deduce from appearances that a tree came from a seed? So it is with the Kingdom. To equate historic Christianity with the final and ultimate issue from the Seed, which is Christ, is foolishness. Eye has not seen, nor ear has heard, nor has it entered into the heart of man the things that God has prepared for us. This refers not merely to the eschaton, but to the reality of the growth of the Kingdom in this world.