Redemptive-historical preaching is preaching every passage of Scripture, in light of its redemptive-historical context, showing how each passage relates to the grace of God which is ultimately revealed in Jesus Christ. In Luke 24:27, our Lord Jesus Himself employed this approach to the Scriptures, while preaching to the disciples on the road to Emmaus and showed how beginning with Moses and all the Prophets, spoke ultimately about Him. Thus according to our Lord, “the Law of Moses and the Prophets and the Psalms” were pointing ultimately to Him (Lk 24:44). Hence to properly interpret the Bible, especially the Old Testament, is to see every text in its redemptive-historical context.
In this way, then, the Bible is seen, not as a collection of abstract moral principles, but rather as an anthology of the events of God’s great works in history. The Bible is dynamic, for it is the unfolding story of the coming Christ, progressively revealing more and more about him throughout salvation history. This, then, is to be the way in which the narratives are to be preached: with a view towards showing how the text points towards Christ.
Dr. Dennis Johnson, author of the 2007 book Him We Proclaim: Preaching Christ in All the Scriptures, speaks to Dr. Michael Horton on how we can preach from all the Scriptures, with Christ at the center. Highly recommended for pastors and preachers, if you desire to be gospel-centered in your preaching ministry.
 Redemptive-Historical Preaching, Wikipedia