It is by the sovereign act of the Holy Spirit that the Scripture can be seen to be the self-attesting Word of God. For sin is that by which men seek to interpret facts apart from the revelation of God. The sinner seeks a criterion of truth and knowledge independent of the revelation of God. The sinner wants to test that which presents itself as the revelation of God by a standard not itself taken from this revelation. He complains of the circular reasoning that would be involved in accepting the word of Scripture about the nature of Scripture. So then, to overcome this hostile attitude of the sinner it is necessary that the Holy Spirit convict him of his sin in not accepting the Bible as the Word of God. The miracles, the prophecies fulfilled, the symmetry of its parts, etc., will all be misinterpreted because interpreted by the wrong standard, unless the Spirit convicts and convinces the sinner that he is dealing with the Word of God.
“For as God alone is a fit witness of himself in his Word, so also the Word will not find acceptance in men’s hearts before it is sealed by the inward testimony of the Spirit. The same Spirit, therefore, who has spoken through the mouths of the prophets must penetrate into our hearts to persuade us that they faithfully proclaimed what had been divinely commanded.” (John Calvin, Institutes 1:7.4)
It should be noted that this view of Scripture thinks of God as here and now speaking to men through his Word. “Scripture is not a dry tale or an old chronicle, but it is the ever living, ever youthful Word which God at the present time and always sends out to his people. It is the ever continuing speech of God to us.” (Herman Bavinck, Gereformeerde Dogmatick, vol. I)
– Cornelius Van Til, A Christian Theory of Knowledge p.33-34
(The Bavinck quote can be found in the John Vriend translation of Reformed Dogmatics: Prolegomena p. 384)