“…the soundest methodological starting point for doing theology is the gospel since the person of Jesus is set forth as the final and fullest expression of God’s revelation of His kingdom. Jesus is the goal and fulfillment of the whole Old Testament, and, as the embodiment of the truth of God, He is the interpretative key to the Bible.”
Graeme Goldsworthy, Preaching the Whole Bible as Christian Scripture, p. 33
(HT: John Fonville)
Already Not Yet 
Amen!
“In [Jesus Christ] are hidden all the treasures of wisdom and knowledge” (Col. 2:2-3).
Awesome.