The Fourth World Conference on Faith and Order, meeting at Montreal in July 1963, recommended the renewal of the study of the Ministry, within a new programme of theological study to be initiated by the Faith and Order Commission. As was noted at Montreal, the Ministry had not been the subject of Faith and Order study for twenty-five years. There were good reasons for this. While the Ministry continued to be the thorniest of the practical problems facing union negotiators, it was widely agreed that theologically it had failed and would continue to fail to yield to a head-on treatment. Only in the light of the doctrine of the Church, considered in its christological and eschatological dimensions, would the Ministry appear in a form that could draw Christians together in church union. So, without altogether losing sight of the hope that something helpful could be said about the Ministry, Faith and Order turned, first to the doctrine of the Church, and then, in the period after Lund, to a study of Christ and the Church. Now the time has come to return to the Ministry, in the light of the work done at these deeper levels of Christian doctrine.