If the following commentary makes any preacher feel I am picking on him, please be assured that I am picking on no one in particular. More than once over the years I have heard preachers begin the homily with words similar to these:
Today's Gospel reading is self-explanatory.
If this were true, then what the preacher should do after saying this is descend the pulpit, and sit back down, so we can get on with the Mass, and not waste our time with what will evidently be a superfluous sermon.
Holy Scripture is not self-explanatory. God sent us preachers, not so they can tell us how unnecessary they are, but so that by their work the Word of God may be administered to the people, liberally, but also carefully, like a physician administering his medicine in just the right way, in the manner that is precisely needed in a given community, and for a given sinner.
I suppose that often times a preacher will fall into a certain routine, or rut, so that he lets things remain in the final draft of the sermon, and then escape from the pulpit, which otherwise would not have passed the first draft. So my comment is meant only as an encouragement to preachers to redouble their efforts, and to be ever vigilant in the holy calling of the teaching of the Gospel. Some people are listening to your sermons, or trying to listen.