The next enlarged meeting of the IMC was in Willingen, Germany, in 1952. Under the threat of events in China to the traditional mission enterprise, delegates rediscovered that mission depends first and foremost on God's own activity. Mission is the purpose and action of the triune God. Willingen is rightly considered to have had the most lasting influence on ecumenical mission theology. Indeed, the idea of missio Dei,that was taken up in the follow-up of Willingen, proved to be most creative. The strong emphasis on the centrality of the church in mission (important since Tambaram) was replaced by an enlarged perspective that allowed an interpretation of world events as determining factors for mission.