Dale Ralph Davis, who is renowned for his excellent commentaries on the Old Testament makes an interesting point when preaching from the Old Testament in his new book on the Psalms:
I do not take a ‘Christological’ approach [to the Psalms] and explain and explain these psalms as speaking of Jesus (unless they do, e.g. Pss 2 and 8). Why is this? Because I do not think that Jesus wants me to do so. Some insist that Jesus insists in Luke 24 (vv. 25-7, 44-7) that every Old Testment passage speaks of him in some way. That, I am convinced, over-reads (and misreads) the passage. Jesus explained to the disciples ‘in all the scriptures’ the things concerning himself (v. 27), and he referred to all things written about him ‘in the law of Moses and the prophets and the psalms’ (v. 44). Note the ‘in.’ Jesus did not say every Old Testament passage spoke of him; he rather took the apostles through the plethora of passages in all parts of the Old Testament that did speak of him or point to him in some way.
Dale Ralph Davis, ‘The Way of the Righteous in the Muck of Life’