Please note the disclaimer in the sidebar to the right. I don't endorse nor agree with all the theological statements on any of the sites I have linked.
Crossings is one of those sites. It speaks favorably of what came to be known as Seminex back in the 1970's. If you don't know what that's about, I would direct you to Anatomy of an Explosion by Kurt Marquart.
Having said that, I have found that Crossings' method of analyzing texts into Diagnosis and Prognosis can be helpful in sermon preparation. It's an interesting take on the Law-Gospel distinction. I have referred to some of the lectionary text studies posted when struggling with how to preach a certain text.