From Dorothee Soelle, Christ the Representative, pg. 112:
The practical importance of the question whether Christ is to be understood as final or provisional becomes clear when we consider the Church’s empirical life and its possible form. In fact, for the Church’s understanding of itself, everything depends on whether it recognizes the provisionality of Christ. If Christ provisionally represents us before God, this means that the company of believers must also take responsibility for someone before God. For the Church, this someone can only be the world, which the Church represents before God. It does so provisionally, conditionally, and for the time being. The Church is not a substitute with which God consoles himself for the loss of a world slipping from his grasp. On the contrary, where the Church really exists, God is assured of what is still future. The Church encourages God so far as the world is concerned, so that He does not give it up for lost but continues to count upon it. The Church exists wherever it emerges as the world’s champion, not as its accuser; as its true spokesman, not as its denigrator. It accordingly knows and promotes the interests of its client. It effaces itself in everything which the world itself has meanwhile learned to understand and put into practice–in certain social tasks, for instance. The Church can conceive a world in which it has itself become superfluous. The Church of the provisional Christ does not constantly need reassurance and confirmation — “Deliver us, guard thy flock, help us.” Rather, the Church is open towards the God who becomes identical with Himself in the world.