Richard A. Muller: If Calvin refuses to allow Scripture to become a static, rationalizable norm divorced from the living work of the Spirit, he also refuses to let the Spirit be considered as a sole norm of faith apart from the rule of Scripture. The Spirit has a genuine "œteaching office" in the church, as promised by Christ in the Gospel of John, which consists not in "œinventing new and unheard-of revelations, or...forging a new kind of doctrine," but in "œsealing our minds with that very doctrine which is commended by the Gospel." The testimony of the Spirit can only confirm the Gospel. "œHe is the Author of the Scriptures: he cannot vary and differ from himself." The Holy Spirit "œinheres" in the truth of Scripture. Scripture, therefore, cannot be a temporary mode of revelation, nor can it be equated with the killing letter and contrasted with the living Spirit. Calvin denies successive dispensations, one of Word, a second of Spirit. After Pentecost, God "œsent down by the same Spirit by whose power he has dispensed the Word, to complete his work by the efficacious confirmation of the Word." This means that Word and Spirit are joined by a "œmutual bond" to the end that the Word is confirmed by the Spirit and the Spirit "œshows forth his power" when the Word receives its due recognition. Richard A. Muller, Post-Reformation Reformed Dogmatics, The Rise and Development of Reformed Orthodoxy, ca. 1520 to ca. 1725: Vol. II, Holy Scripture, The Cognitive Foundation of Theology, 2nd ed. (Grand Rapids: Baker Academic, 2003), p. 203.