Holy Scriptures have a value of their own, and are in a certain sense even necessary. They contain not only the Word, but also the language of God, and they give details, developments, and illustrations to an extent unattainable by Tradition. They are a sort of text-book of Tradition, enabling the Faithful to acquire a vivid knowledge of revealed truths. There is no revealed doctrine which has not at least some foundation in the Bible. The most important truths are explicitly stated there. On the whole, we may say that Oral Tradition is the living and authentic commentary upon the written document, yet, at the same time, not a mere commentary, but something self-subsistent, confirming, illustrating, completing and vivifying the text.
III. The Fathers and the Schoolmen often insist upon the completeness and sufficiency of Holy Scripture, but they do so in the sense of the present section. The Bible clearly teaches the doctrine of the Teaching Apostolate, and this implicitly contains the whole of Revelation. Hence we may say that the Bible itself is complete and sufficient. Sometimes, however, the Fathers speak of the completeness of Scripture merely with regard to certain points of doctrine. Thus in the well-known passage of St. Vincent of Lerins (Common., c. 2) where it is said that “the canon of the Scriptures is perfect, and of itself enough and more than enough for everything” the Saint is really putting an objection, which he proceeds to answer in favour of the necessity of tradition. And Tertullian’s saying, “I worship the fulness of Scripture,” refers to the doctrine of creation (cf. Franz., De Trad., th. xix.). On the other hand, certain texts of the Fathers which at first sight might be quoted in support of our thesis refer to discipline rather than to dogma.
There are many regulations which have been handed down with apostolic authority, but not as revealed by God. These are called Merely-Apostolic Traditions, in contradistinction to the Divino-Apostolic Traditions. This distinction, though clear enough in itself, is not easy of application, except in matters strictly dogmatical or strictly moral. In other matters, such as ecclesiastical institutions
