You are a “preacher”? What makes you qualified? Just wondering.
You might start with his tagline: "(Lutheran pastor, LCMS)"
And follow the link to his sermon, given above.
http://www.freerepublic.com/focus/f-bloggers/2227278/posts
I'm not familiar with him myself, but I'd guess those are a good start towards answering your own challenge.
I have an M.Div. from Concordia Seminary in St. Louis (as well as an S.T.M. in Exegetical Theology and "ABD" Ph.D. in Biblical Studies). I am ordained (1992) and have been called to the particular parish where I now serve. I have been judged by the church to be apt to preach and to teach, and Christ has ordered me to do so.