This purpose, as described by Pope John XXIII, in the statement he delivered at the Council’s opening, in 1962, went like this: “What is needed is that this certain and immutable doctrine, to which the faithful owe obedience, be studied afresh and reformulated in contemporary terms. For this deposit of faith, or truths which are contained in our time-honored teaching, is one thing; the manner in which these truths are set forth, with their meaning preserved intact, is something else.”