We have gathered to reflect on the significance of the Willingen Conference of 1952 for our today. Willingen did not understand itself to be an end in itself, It was conceived as a milestone (1) on the road towards an in-depth understanding of that, in turn, would lead to a renewed endeavour establish faithful obedience among the nations. The concept of missio Dei was only used in passing at the conference, and it was only later, through the publication of G. Vicedom (2), that it came to sum up the new approach and me sage of the conference so precisely. Willingen 1952 was the first time that was so comprehensively anchored in the doctrine of God. That was source of relief, to start with, since had again fallen into crisis after the second world war, albeit proclaimed the great event of the 20th century the first world conference in Edinburgh. Expectations began to crumble. At Whitby, in 1947, we hoped that the most testing days of the Christian at least for our generation, lay behind us ... But here at Willingen clouds and thick darkness surround the city, and we know with complete certainty that the most testing days of the Christian in our generation lie just ahead. (3) Vast, promising fields were closed (e.g. China) under the Cross characterized the mood that was marked no long by hope but by concern, if not depression. Anchoring in God was relief. Die Sach' ist dein, Herr Jesu Christ (The cause is yours, Lord Jesus Christ), had always been a popular hymn in missionary circles, but now this line took on a new theological dimension. God, the triune God, was seen to the initiator, missionary and fulfiller of mission. Since, however, the question of missio hominum was only touched upon at the conference the differences visible beforehand persisted, and to this day still lurk in the background theology debate. On the one hand, there is the rejection of church-oriented by J. Chr Hoekendijk, who saw the church as an appendix of God's coming into the world, the actual missio Dei (4). On the other hand, one can typically quote Freytag, who so esteemed the of the church that it became the sign the last days, and the very meaning of world history. (5) Even if the two positions indicate extremes, they are still operative below the surface today, and may be discerned even in the magazines put out by different associations. The magazines of church-run societies primarily deal with social problems in the countries of the churches overseas. The evangelical magazine however, focus on the personal experience of faith and conversion, and refer to the relevant social environment at most when their missionaries come under pressure from other religions. The Hamburg-based Association of Protestant Churches and Missions in Germany (EMW) uses a compromise definition: Of course is an invitation to believe, and to talk about the meaning of life. It is the working for liberation, human rights and human dignity. Mission is the struggle against racism and economic exploitation, and works for reconciliation and justice. Mission is connected with the debt issue and about establishing a reconciled global community. (6) Even if K. Schafer clearly states that for him evangelism is the heart of mission, and the different accents in understanding depend on the respective situations, he, too, still cannot escape the criticism levelled at Hoekendijk and his approach, viz. that of expanding the concept of to the point where it becomes imprecise and meaningless. The criteria of differentiation are lacking. Why does the commitment to a more just world come under mission when it applies to Latin America (a commitment shared with the trades unions) but not when it applies to Germany? Where is the criterion for classifying anti-globalization activists as engaging in missionary activity in one instance, and not in another? …