"Biblical theology" refers to something more precise than theology that is faithful to the Bible. It might be helpful to draw a contrast: at the risk of oversimplification, systematic theology tends to organize theology topically and with an eye cast on its contemporary relevance, while biblical theology tends to organize the same biblical material so that it is easier to see the distinctive contribution of each biblical book and human author, and to trace the trajectories of themes across the Bible so we see how the books of the Bible hold together.
D. A. CarsonTo know God is to be transformed, and thus to be introduced to a life that could not otherwise be experienced.
D. A. CarsonChristianity does not claim to convey merely religious truth, but truth about all reality. This vision of reality is radically different from a secularist vision that wants Christianity to scuttle into the corner of the hearth by the coal shovel, conveniently out of the way of anything but private religious concerns
D. A. CarsonThe New Testament writers I think conceive of their inspired Scripture writings as flushing out, bringing to articulation, expounding and so on the climactic revelation in the son, but this in self-conscious fulfillment of the promises and covenants that were already made to God's chosen people in Old Testament times.
D. A. Carson