"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. CarsonWe want to fan the flames of Christians for whom inerrancy and the authority of Scripture are not mere shibboleths, but part of her life beat, part of the beating heart of what makes them tick. They revere Scripture, not because Scripture becomes an idol, but because it discloses God who is especially come after us in salvation and redemption through the person of his son, his cross, his resurrection, the full sweep of the gospel.
D. A. Carson