The Wesleyan Church affirms the 66-book Protestant biblical canon: the 39 books of the Hebrew Old Testament and the 27 books of the New Testament. These books are recognized as the complete, authoritative, and sufficient revelation of God's will for salvation and Christian living. The church does not include the deuterocanonical books (the Apocrypha) as part of the biblical canon, following the Protestant tradition established at the Reformation.

The canon is closed; no additional books are to be added. Both Old and New Testaments are equally authoritative and together form the complete Word of God. The church's approach to Scripture is regulated by the Quadrilateral (Scripture, Tradition, Experience, Reason), but Scripture holds the normative, decisive role. The Discipline is subordinate to Scripture and exists to guide the church's application of biblical truth.