Bede the Venerable
Catena Aurea · Lukasevangelium 2
And so it was, that, while they were there, the days were accomplished that, she should be delivered. And she brought forth her firstborn son, and wrapped him in swaddling clothes, and laid him in a manger; because there was no room for them in the inn.
He is confined in the narrow space of a rude manger, whose seat is the heavens, that He may give us ample room in the joys of His heavenly kingdom. He Who is the bread of Angels is laid down in a manger, that He might feast us, as it were the sacred animals, with the bread of His flesh.