Kevin Vanhoozer on Biblical Theology

"To read the Bible canonically is to read the Bible as a unified communicative act, that is, as the complex, multi-levelled speech act of a single divine author. It follows that biblical theology - not just OT or NT theology but the theology of the whole Bible - is the attempt to read Scripture as the word of God. To read the Bible canonically may be to read it according to its truest, fullest, divine intention. This is a most important point; the canonical approach is a matter not of how the church reads the Bible but of what the Bible is. To read the Bible as unified Scripture is not just one interpretative interest among others, but the interpretative strategy that best corresponds to the nature of the text itself, given its divine inspiration."
(NDBT 61)