Have a happy Yule:
Many of the symbols and motifs associated with the modern holiday of Christmas are derived from traditional pagan northern European Yule celebrations. The burning of the Yule log, the decorating of Christmas trees, the eating of ham, the hanging of boughs, holly, mistletoe, etc. are all historically practices associated with Yule. When the Christianization of the Germanic peoples began, missionaries found it convenient to provide a Christian reinterpretation of popular pagan holidays such as Yule and allow the celebrations themselves to go on largely unchanged, versus trying to confront and suppress them. The Scandinavian tradition of slaughtering a pig at Christmas (see Christmas ham) is probably salient evidence of this. The tradition is thought to be derived from the sacrifice of boars to the god Freyr at the Yule celebrations. Halloween and aspects of Easter celebrations are likewise assimilated from northern European pagan festivals.
English historian Bede’s Historia ecclesiastica gentis Anglorum contains a letter from Pope Gregory I to Saint Mellitus, who was then on his way to England to conduct missionary work among the pagan Anglo-Saxons. Pope Gregory suggested that converting heathens would go easier if they were allowed to retain the outward forms of their traditional pagan practices and traditions, while recasting those traditions spiritually towards the Christian God instead of to their pagan “devils”: “to the end that, whilst some gratifications are outwardly permitted them, they may the more easily consent to the inward consolations of the grace of God”.