"The principle is simply this: Jesus says that the Old Testament is about Him. [The question is then]... How does this passage of Scripture, and consequently my sermon (etc), testify to Christ" (p20-21)I'm not sure I've ever learned anything else more vital. Seeing this, which I'm sure I would have affirmed before then, was like the lights turning on, like the dots being joined together. Blurry texts come into sharp focus, connections between things become visible. My Bible became a coherent sixty-six part Christian document and not just a mess in twenty seven parts. The glories of the gospel become freshly unveiled and their riches begin to sparkle.
The implications of this lead to asking about the centrality of the gospel in each and every area of my life... something that I'll be grappling with on every today I'm given. That the gospel is central will surely forever be the most important thing I learn in life, everything else is unpacking and outworking and applying that - starting with my home - with my wife and the imminent (and overdue) arrival of our first child.
More on this at BeginningWithMoses.org, in God's Big Picture by Vaughan Roberts, Mike Bullmore on The Functional Centrality of the Gospel in the Local Church.