“Isn’t there anyone who knows what Christmas is all about?”1 asked Charlie Brown in the Charles M. Schultz 1965 classic A Charlie Brown Christmas. With childlike simplicity, his buddy Linus answers by reciting Luke 2:8–14: And in the same region there were shepherds out in the field, keeping watch over their flock by night. And an angel of the Lord appeared to them, and the glory of the Lord shone around them, and they were filled with great fear. And…