In some Christian circles, there has arisen a notion, variously expressed, that the Scriptures are the only final and true authority for Christian faith and practice. This is communicated in the following quotations from three very different areas of Protestant theology (emphasis added).
"The
supreme judge by which all controversies of religion are to be determined, and all decrees of councils, opinions of ancient writers, doctrines of men, and private spirits, are to be examined, and in whose sentence we are to rest,
can be no other but the Holy Spirit speaking in the Scripture." (Westminster Confession)
"Do you accept the Holy Scriptures, the Old and New Testaments, as the word of God and the
only perfect rule for faith, doctrine, and conduct?" (Affirmation required of new members in the Evangelical Covenant Church)
"We believe, teach, and confess that the
only rule and guiding principle according to which all teachings and teachers are to be evaluated and judged are the prophetic and apostolic writings of the Old and New Testaments alone." (Lutheran Book of Concord)
Christianity has always affirmed that the Scriptures are indeed authoritative. What is novel in such statements is the idea that they are the
only ultimate authority or rule, in the sense that all other authorities are subordinate or derivative.
There are two common objections to this idea which are extremely simple but nevertheless forceful and which I will briefly recount.
First, the doctrine is self-defeating. If all controversies, opinions, doctrines, etc. are to be judged according to the rule of Scripture, then the doctrine that Scripture is the only perfect rule must also be judged according to the rule of Scripture. However, Scripture nowhere teaches itself to be the only perfect rule and standard (and indeed teaches to the contrary, although this fact is not required for the objection to work). Therefore, given the contents of Scripture, the doctrine entails its own falsity.
Second, the doctrine assumes an authoritative canon. If all controversies, opinions, doctrines, etc. are to be judged according to the rule of Scripture, then the various controversies and doctrines concerning what counts as "Scripture" in the first place must also be judged according to the rule of Scripture. However, this is impossible, for it is not possible to decide upon what should compose a whole by appeal to the whole already composed. Therefore, Scripture is unable to determine the canon of Scripture. (Furthermore, Scripture nowhere communicates what writings and what portions of those writings should be considered Scripture, although this is again not required for the objection to work.) But if Scripture is unable to determine the canon of Scripture, then either (a) it must be determined by some other authority, in which case the doctrine of Scripture as final authority is false, because it depends upon a more fundamental authority, or (b) it is not determined by any authority, in which case the doctrine of Scripture as final authority is false, because there is no authoritative referent for the term "Scripture."
I take both objections to be powerful, but they only show that the doctrine is wrong, not why it is wrong. What is more important, then, is to understand the role of Scripture in the life of the Church.
We value the Scriptures because we are Christians, not the other way around. This is true analytically, it is true with respect to normal Christian autobiography, and it is true with respect to Church history. The Scriptures do not create a faith tradition; they assume it and exist to improve it. Christ did not give us Scriptures when he became incarnate; rather, Christ gave us a Church. Paul, writing his epistles, had the aim of assisting this Church, not supplanting its authority. When the Scriptures were being compiled, they were measured for authoritativeness against the faith and practice of the Church, and this is still the benchmark by which they should be understood and interpreted. As Paul tells us clearly in his letter to Timothy, the "pillar and foundation of truth" is the Church.
The Scriptures are a tremendous gift from God; they are indeed authoritative, inspired by God, and able to equip us for good faith, doctrine, and conduct. The Scriptures communicate the Word of God. The mistake in claiming for them sole authority does not lie in overvaluing the Scriptures, for to do so would be almost impossible. Rather, the mistake lies in undervaluing the rest of God's revelation to humanity. The Scriptures do not exhaust the Word of God, and they must take their place alongside all that God says and does.