A while back I engaged in a series on the offices of Christ (Prophet, Priest, and King). It is one of my favorite studies to engage in. Such a study not only directs our focus upon Christ, but it affords us with a deeper and broader understanding of the gospel, as well as opens up so much of the Bible to us, as these offices of Christ are present from Genesis to Revelation. Well, Renewing Your Mind Radio, with R. C. Sproul, has recently put out a brief lecture on this subject of the offices of Christ (below). I would also like to point you to the series I did on this subject on my blog.