Barth stressed the importance of theology in safeguarding the vision and identity of the church. Positive, yet critical, theology serves the church and keeps it faithful to its calling. And who is authorized to "do" theology? Barth had no hesitation in reaffirming the great Protestant theme of the democratization of the faith. (McGrath, p. 239).
Barth goes on in the paragraph that follows to not the importance of both pastors and professors to this process. Still he leaves the ball in the church's court.In conclusion, theology is not a private subject for theologians only. Nor is it a private subject for professors. Fortunately, there have always been pastors who have understood more about theology than most professors. Nor is theology a private subject of study for pastors. Fortunately, there have been repeatedly congregation members, and often whole congregations, who have pursued theology energetically while their pastors were theological infants or barbarians. Theology is a matter for the church. (Karl Barth, God in Action, Round Table Press, 1963, pp. 56-57)
In the Church there are really no non-theologians. The concept "laymen" is one of the worst concepts in religious terminology, a concept that should be eliminated from the Christian vocabulary. (Barth, p. 57)