Gavin Ortlund posts a great interview today over at The Gospel Coalition. He interviews Graeme Goldsworthy on how the preacher should use biblical theology when preaching in the Old Testament.

I encourage you to read the whole interview and check out some of Goldsworthy’s books (I have reviewed his Christ-Centered Biblical Theology here).

Here is an excerpt to wet your appetite for the entire interview.

What is typology and when should a preacher use it? Can you give examples?

Typology is the technical term that relates to the way the Old Testament narratives, institutions, events, and persons foreshadow in various ways the person and work of Christ. It is generated by the testimony of Jesus and the New Testament writers that God’s unfolding plan in the historical experience of God’s people in the Old Testament is a shadow of the reality revealed in Christ. The type is often explicitly confirmed in the prophetic promise of the future. The New Testament shows in what various ways Christ is the antitype or fulfilment.

Preachers should refer to typology when moving from the Old Testament to Christ. They can include the occasional series (say, six or eight sermons) exploring a biblical-theological theme, like law or temple or priesthood or kindgom. The typology should be based on the scriptural evidence, and not on the preacher’s imagination or on the association of ideas.

All the major dimensions of kingdom revelation in Old Testament history are typological: creation, covenant, exile and exodus, promised land, tabernacle/temple, dominion/kingship, and of course prophet, priest, king, and wise man.

Suppose you’re preaching or teaching on David and Goliath in 1 Samuel 17. How would an understanding of biblical theology affect how you interpreted and applied this story to God’s people?

David is the anointed king of God’s people who does for them what they can’t do for themselves. Biblical theology alerts us to the direct line that runs from David through to Jesus. He is the savior of Israel, the shadow of the anointed one (the Christ). He stands in their place and wins the victory for them. Biblical theology doesn’t prevent us from appreciating and aiming to emulate David’s courage and faith in this passage, but it also directs us to the larger themes running throughout the entire Old Testament, centered on the expectation of a coming Messiah who would redeem God’s people from their sins.

Thus a preacher approaching this text from the standpoint of biblical theology would more naturally encourage his listeners to identify themselves, not with David, but with the frightened Israelites whom David saves. Attempts to make David merely an example of faith runs the risk of sending the message that, given enough faith, we can save ourselves.