If you've taught children (... or youth ... and sometimes even adults) for any length of time you will invariably hear, "I've heard that before!" Or maybe, as you've been preparing to teach one of those groups you've thought to yourself, "I've been through this already." Repetition gets a bad rap. While we may have heard the words before, we probably didn't apply them to our hearts and lives.
Here's what Martyn Lloyd-Jones wrote on the topic of repetition in his commentary on 1 John, Life in Christ:
"... repetition is the very art of teaching. Wise teachers always repeat themselves. There are certain things that can never be repeated too often, and although John is an old man, he is a teacher."
As we are in the season of Advent, we need to be reminded again (and afresh) of the reason for this celebration. We must enter into this season with awe, worship, and submission; and that doesn't happen apart from being reminded again and again. It doesn't happen without repetition.
Teachers, repeat away! You can never hear the life transforming words of the gospel too much! Few of us were converted the first time we heard it. We have all been changed through someone's faithfulness to the message and their willingness to repeat it over and over again, in many different ways, on many different occasions.
I'll say it again (for emphasis), "Repeat away!"
Quote from pg. 205 of Martyn Lloyd-Jones' Life in Christ (Crossway, 2002).