In conclusion, a word about your tired expression that there is a difference between theory and praxis. ... Thereby you want to say that praxis shoul… - Karl Barth

What lies between these two ends, these ‘last things’, is the world, our world, the comprehensible world which has been given us.

Knowledge of God is obedience to God. Observe that we do not say that knowledge of God may also be obedience, or that of necessity it has obedience attached to it, or that it is followed by obedience. No; knowledge of God as knowledge of faith is in itself and of essential necessity obedience. It is an act of human decision corresponding to the act of divine decision; corresponding to the act of the divine being as the living Lord; corresponding to the act of grace in which faith is grounded and continually grounded again in God. In this act God posits Himself as our object and ourselves as those who know Him. But the fact that He does so means that our knowing God can consist only in our following this act, in ourselves becoming a correspondence of this act, in ourselves and our whole existence and therefore our considering and conceiving becoming the human act corresponding to the divine act. This is obedience, the obedience of faith.

"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."