The old life is left behind, and completely surrendered. The disciple is dragged out of his relative security into a life of absolute insecurity (that is, in truth, into the absolute security and safety of the fellowship of Jesus), from a life which is observable and calculable (it is, in fact, quite incalculable) into a life where everything is unobservable and fortuitous (that is, into one which is necessary and calculable), out of the realm of finite (which is in truth the infinite) into the realm of infinite possibilities (which is the one liberating reality). Again it is no universal law. Rather is it the exact opposite of all legality. It is nothing else than bondage to Jesus Christ alone, completely breaking through every programme, every ideal, every set of laws. No other significance is possible, since Jesus is the only significance. Beside Jesus nothing has any significance. He alone matters.
Dietrich Bonhoeffer – The Cost of Discipleshop