The Dogmatic Constitution on Divine Revelation Dei Verbum
The first constitution to be approved by the Second Vatican Council was the Constitution on the Liturgy, but it is Dei Verbum, the Constitution on Revelation, which reveals most clearly the change in attitude that happened at the Council, because it brought about a change in the way Revelation came to be conceived and taught by the Council. This change in attitude marks all the documents of the Council and gave to the post-Vatican 2 Church a new vision of its mission in the world. It is this change in attitude that remains the great challenge that the Council still presents us with today.
The Constitution, Verbum Dei, speaks of the three guidelines of our Faith: Scripture, Tradition, and the Magisterium and also of the relationship between the three. However, because of historical reasons, right up to the eve of Vatican 2, the impression was given that the source of faith consisted in consulting the Magisterium.