One of my favorite professors of all time (Dr. Julie Gorman at Fuller) said something that I will never forget: If you don’t know what you want to teach well enough to say it in one sentence, you don’t know it well enough. So true. I have sat through way too many lessons (and sermons) that made me confused because the point was never clearly articulated.
Take a second before you teach and ask yourself: what do I want them to know? Then, whittle it down until you have it in a sentence. THEN (and only then!) build your lesson around that concept making sure all of your ideas and illustrations tie in and support that point. And, it doesn’t hurt to actually say that sentence a couple of times during the lesson either.