Describing his witness, Paul says that Christ sent him not to baptize, but to proclaim the gospel. Paul is an apostle, a witness bearing the good news of the Messiah who has come into the world and of the Kingdom which, according to the Messiah's word, "has drawn near"...
Describing his witness, Paul says that Christ sent him not to baptize, but to proclaim the gospel. Paul is an apostle, a witness bearing the good news of the Messiah who has come into the world and of the Kingdom which, according to the Messiah's word, "has drawn near." Apostleship is always witness. An apostle is not a teacher, not a mentor, not the presider of a church assembly, not a catechist. His task is more definite: he is a witness who must tell about what he has seen and experienced. He must tell it in such a way that those who listen see and experience everything, as far as possible, as clearly and distinctly as the witness himself.
If the matter is the Kingdom, then the listeners must experience being joined to the life of the Kingdom just as the witness who carries out apostolic ministry has experienced it. Of course, every Christian activity is to some degree, or at least should be, apostolic: after all, a Christian is a citizen of the Kingdom, and if that is so, then communion with him must necessarily open the Kingdom to those who share in it. But apostolic ministry is witness exclusively, or at least primarily; the apostle devotes his whole life to it.
For the Church such witness is of the greatest importance: it is a matter of the Kingdom being manifested to the world by concrete people who live by that Kingdom. Authentic Christianity, Christianity not as a new religion or a new teaching but as new life, can spread through the world only in this way. But in individual churches, in every age, there has been a tendency to turn Christianity from the experience of new life into a new religion or some new spiritual teaching. This is what happened in the Corinthian church as well.
There, judging by the apostle's words, certain groups had appeared, apparently formed around teachers or preachers known in the community, and their members identified themselves precisely with their own group. The reaction to the appearance of such groups may have been the appearance of certain "pure Christians" or "just Christians," who said of themselves that they were "Christ's," in contrast to supporters of various teachers and preachers. But whatever all these people said about themselves and about one another, all of them had already ceased to be simply Christians.
They had already linked their Christianity not only and not so much with Christ and His Kingdom as with certain people. And Christianity itself had become for them a new teaching rather than a new life. This is the essential transformation against which Paul warns the Corinthian Christians: it shifts their attention from Christ and the Kingdom to something that may even be interesting and in some respect true, but has no direct relation to the Kingdom. And therefore it has no direct relation to Christianity as such.