" No one, however, can be content at this point to be a mere " layman," to be indolent, to be no more than a passive spectator or reader. No one is excused the task of asking questions or the more difficult task of providing and assessing answers. Preaching in the congregation, and the theology which serves its preparation, can be faithful to its theme and therefore relevant and adapted to the circumstances and edifying to the community, only if it is surrounded, sustained and constantly stimulated and fructified by the questions and answers of the community. With his own questions and answers in matters of right understanding
and doctrine, each individual Christian thus participates in what the community is commanded to do. If he holds aloof, or slackens, or allows himself to sleep, or wanders into speculation and error, he must not be surprised if sooner or later the same will have to be said about the community as such and particularly about its more responsible members. How many complaints about the "Church" would never be made if only those who make them were to realise that we ourselves are the Church, so that what it has or has not to say stands or falls with us. There can be no doubt that all the great errors which have overtaken the preaching and theology of the community in the course of its history have had their true origin, not so much in the studies of the well-known errorists and heretics who have merely blabbed them out, but rather in the secret inattention and neglect, the private drowsing and wandering and erring, of innumerable nameless Christians who were not prepared to regard the listening of the community to the Word as their own concern, who wanted privacy in their thinking, and who thus created the atmosphere in which heresy and error became possible and even inevitable in the community. "

― Karl Barth , Church Dogmatics: A Selection