How is your Sunday sermon conveying theology?

Recently, I enjoyed a full afternoon conducting a preaching workshop with 20 other pastors and lay teachers. One thing we explored was how theology is conveyed in a preaching portion (the amount of Scripture you select for your sermon). I commented that theology is conveyed in Scripture through the structure of the preaching portion. It is common, however, for preachers to stray from the logic or flow of thought created by the Author/author. So, take a look at your sermon for this Sunday. How is your sermon conveying theology? Is your sermon somehow following the logic conveyed in your preaching portion or have you changed it? If you changed it, what theology are you communicating? The most important part of my study is the first half hour that I devote each week making sure I can identify the logical flow of my preaching portion.