In 2019, the Holy Father issued an Apostolic Letter on the meaning and importance of the nativity scene. Entitled ‘Admirabile signum’ the Letter refers to the “enchanting image” of the Christmas scene, one that “never ceases to arouse amazement and wonder”. The Holy Father says:
“The depiction of Jesus’ birth is itself a simple and joyful proclamation of the mystery of the Incarnation of the Son of God”.
The full text of the letter can be downloaded here.