D. A. Carson Biblical Quotations

It's better to emphasize biblical theology, partly because there are fine Study Bibles already available that lean into systematic theology, and partly because biblical theology is particularly strong at helping readers see how the Bible hangs together in its own categories: that is, God in his infinite wisdom chose to give us his Word in the 66 canonical books, with all of their variations in theme, emphasis, vocabulary, literary form, and distinctive contributions across time.

Systematic theology will ask questions like "What are the attributes of God? What is sin? What does the cross achieve?" Biblical theology tends to ask questions such as "What is the theology of the prophecy of Isaiah? What do we learn from John's Gospel? How does the theme of the temple work itself out across the entire Bible?" Both approaches are legitimate; both are important. They are mutually complementary.

"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.