What does Luke 2:17 mean?
Mary has recently given birth to Jesus, in humble circumstances (Luke 2:1–7). Shortly afterwards, a throng of angels announced the birth—but not to kings and scholars. Instead, the angels presented their news to local shepherds. After overcoming their initial terror, these men quickly followed the angels' description and found Jesus exactly as predicted (Luke 2:8–16).Here, the shepherds explain how they came to find Mary and Joseph. "The saying" they relate would have included everything they were told by the angels, including the celebratory song. The next verse indicates that more people are present other than just Joseph and Mary (Luke 2:18). This probably means other people staying in the same location, or possibly local neighbors. It's also entirely possible that the shepherds told others—perhaps even everyone they saw—as they made their way to Christ's location.
Traditional "nativity scenes" set out during Christmas celebrations include many people and animals that aren't included in the text of the Bible itself. All we know, for sure, is that this meeting involves Jesus' immediate family and the arriving herdsmen.