Did you catch it? That's right! He actually drops his security blanket at the very moment he recites the angel saying "Fear not!" In so doing, he shows us that he really does understand what Christmas is all about!
Because of Christmas, we no longer have to fear! Not the evil one, not our fellow man, and yes, especially not even our God! For in sending His Son Christ Jesus to us, He has shown us that He loves us enough to die for us! And if God be for us, then who can be against us?!
VIDEO SOURCE: https://www.youtube.com/watch?v=LxaG0ZrwJ5k.
NOTE: LINUS IS HERE QUOTING THE NEW TESTAMENT GOSPEL OF LUKE, CHAPTER 2, VERSES 8-14. Cf.: http://biblehub.com/kjv/luke/2.htm.