Well, if you think about what made the Vikings such a lasting threat, they always adopted the culture of their victims. Easier to liberate than to conquer. Intertwine the practices, rituals and beliefs of Canaanite into all cultures.
How many civilizations have had their destiny steered into destruction by Canaanite beliefs? They probably played a hand in the fall of Rome from behind the scenes over the centuries. That's doesn't seem like a crazy conclusion to jump to.
Christmas is a good common example of this method in practice today. Nothing about Christmas is Christian.