First, the shepherds didn’t mess with the message. They are said to have made known that which was said to them. They are courriers for the message, not the authors of the message. Likewise, when we engage in the ministry of evangelism, we are courriers of the message. We are not responsible for altering the gospel; we must simply share what we have heard. Indeed, if we were to alter the good news, it would no longer be the good news; it would be some other news. Like those shepherds, we must make known what we’ve heard.
Second, Luke reports that all who heard their message were filled with wondrous awe. This reminds us that Jesus is not boring. He comes into the world as the God-man on a rescue mission. He comes with good news for the poor and the marginalized. He comes to offer new life and abundant life. He comes to make new creation. He comes to make his blessing known. And if we are to be faithful, then we should tell the story in a way that evokes amazement, wonder, and awe. If we don’t, we may not have the story straight.
The birth of Christ the Savior is good news. And we see in the shepherds that an appropriate response to receiving that news is to spread that news. We may not always think of it this way, but Advent should motivate among us a passionate evangelistic zeal that evokes a response of amazement from those who hear.