The Sufficiency of Scripture
As taught in the Reformed / Presbyterian tradition
The Reformed commitment to Sola Scriptura as the only infallible rule of faith and practice.
The doctrine of the sufficiency of Scripture, often summarized by the Reformation slogan Sola Scriptura, stands as the "formal principle" of the Reformed tradition. Within the architecture of Reformed Theology Proper, this subtopic answers a foundational question: Has God revealed enough of Himself and His will in the written Word to guide the believer and the Church into all truth necessary for salvation and godliness? In the Reformed view, the answer is a robust and definitive "Yes." This does not mean the Bible contains all knowledge about everything—it is not a manual for internal combustion engines or a textbook for quantum physics—but it does mean that "the whole counsel of God concerning all things necessary for His own glory, man's salvation, faith and life, is either expressly set down in Scripture, or by good and necessary consequence may be deduced from Scripture."
By the end of this lesson
- **Identify** the definition of the sufficiency of Scripture within the Reformed tradition, distinguishing it from claims of biblical omniscience.
- **Distinguish** between the "magisterial" authority of Scripture and the "ministerial" authority of church tradition and reason.
- **Explain** the concept of "good and necessary consequence" as it relates to deriving doctrine from the biblical text.
- **Articulate** the relationship between the closing of the biblical canon and the doctrine of sufficiency.
- **Trace** the development of this doctrine from the Scripture anchors to the Westminster Confession of Faith.
- **Defend** the sufficiency of Scripture against modern claims of "new revelation" or the necessity of secular syntheses in Christian living.
- **Apply** the doctrine of sufficiency to the "Regulative Principle of Worship," ensuring that corporate worship is governed by the Word alone.
- **Compare** the Reformed view of sufficiency with the Roman Catholic and Radical Reformation (Anabaptist) views of authority.
Scripture
The full lesson, its study guide and questions, and an AI tutor that answers from Scripture with citations are free with an account.