In her message at TGCW21, Nancy Guthrie defines biblical theology and explores how it can transform Bible study as we gain a greater understanding of the Bible through it.
Guthrie says biblical theology is a way of seeing the Bible as one cohesive story about what God is doing in the world through Christ. Approaching the Scriptures with biblical theology as a framework, Christians should experience deeper awe at what Christ has done, not an overwhelming feeling of what we have to do. The smaller stories of the Bible are all woven together into the greater story of Christ—allowing us to see the beauty, sufficiency, and necessity of our union with him.
The Gospel Coalition