I taught from one of the Gospels for each Sunday of Advent. Luke is the most robust, of course, because his Christmas story was meant to fill in the details of what Matthew and Mark had already written.
Here are recordings from various places I've had a chance to preach. I've tried to provide links to the original sites to give them credit. If you have any questions on anything you hear, please write it in the comments or publish a blog post about it and let me know.
My sermon from Mark 7 about following the Law or following Jesus.
What the Gospel of Matthew has to say about Christmas. Part of a 4 part series of each of the Gospels’ Christmas stories.
In this sermon, I talk about Jesus healing a paralyzed man in Mark 2, and the fanatical dudes that brought him there.