For Barth, the Christian life is all grace from beginning to end, so the Christian is always a “beginner,” leaning upon God’s grace in all things.
[T]hose who through grace (because Jesus Christ became and is their Brother) have the freedom to call upon God as their Father will never once, when they make use of this freedom, encounter God except as those who are inept, inexperienced, unskilled, and immature, as children in this sense too – little children who are totally unprepared for it. The invocation “Our Father,” and all the Christian life and ethos implicit in this invocation, can never at any stage or in any form be anything but the work of beginners. Even at the most advanced stage and in the ripest form it can never be anything better, for in this field what is supposedly better can only be worse, indeed, it can only be evil. What Christians do becomes a self-contradiction when it takes the form of a trained and mastered routine, of a learned and practiced art. They may and can be masters and even virtuosos in many things, but never in what makes them Christians, God’s children. As masters and virtuosos they would not live by God’s grace. … In invocation of God the Father everything depends on whether or not it is done in sheer need (not self-won competence), in sheer readiness to learn (not schooled erudition), and in sheer helplessness (not the application of a technique of self-help). This can be the work only of very weak and very little and very poor children, of those who in the littleness, weakness, and poverty can only get up and run with empty hands to their Father (Church Dogmatics, IV.4, 79-80).