The Church’s Twenty-One ecumenical councils have been crucial to its understanding of its biblical heritage. They have taken place less frequently in recent centuries, only three since 1517: Trent (1545-1563), Vatican I (1869—1870), and Vatican II (1962-1965). Their absorption into the day-to-day practice of individual Christians has always taken time. And Vatican II has been no exception. Hence the importance of this completely revised translation of Vatican II’s sixteen documents, without commentary or additional documentation, and in inclusive language. A new edition of the documents of the twenty-first ecumenical council, for the twenty-first century.