Infallibility and Hermeneutics
...it is one thing to argue the infallibility of the text in all matters of faith and practice and then to interpret the text following the fourfold “allegorical” exegesis typical of the medieval commentators and to do so before any creed or confession of the church had defined the canon of Scripture in the strictest terms—and quite another thing to make the same statement of the infallibility of the text in the context of a literal method of exegesis and a strict definition of the books included in the normative canon of Scripture.
Richard A. Muller, Post-Reformation Reformed Dogmatics: The Rise and Development of Reformed Orthodoxy; Volume 2: The Cognitive Foundation of Theology, 2nd ed. (Grand Rapids, MI: Baker Academic, 2003), 28.