Paul Powell, in his "Minister's Manual," suggests that the pastor keep a half dozen or so funeral messages ready to go at a minute's notice so that the busy pastor is not caught off guard by a funeral. Obviously, you never just preach a sermon repeatedly at a funeral impersonally verbatim. But the major gist is pretty well set. I practice this in my ministry. I have some passages I preach from, and can add some personal things that personalize each sermon. Do you do this? How long is your typical funeral sermon? Do you include a gospel appeal to the unsaved and/or "rededication appeal" (Oh I hate that phrase)? Do you include a formal invitation to "walk the aisle"? (Another phrase I hate) My practice is to preach about 10 minutes, absolutely no more than 15. Grieving people can't hang on longer than that. I present the gospel in such a way as to tell the unsaved how to be saved and the straying one to come home. Above all, I preach to comfort the hurting and point them to the Great Physician who heals body and soul.