Destiny doesn't need Christmas because so many facets of the destiny universe contradict many current religions. Obviously the God that many today worship never came to save humanity from the evil that rose to consume us, unless you count the 'traveler' which would mean that our celestial deity is a giant mysterious space ball (thus debunking every current religion). The Speaker is the equivalent of the Pope and can basically say whatever he wants on behalf of the space ball and make his word law on grounds that it is proclaimed by the highest power! (Not too different from what we have now) The festival of the lost was pulled from ancient pagan practices of honoring those who have died; it also moves on to remember all whose light is no longer retrievable, forever lost to darkness. The destiny universe has its own religion established after the fall of humanity; all ancient (modern for those in 2015) religions were disproven and are long forgotten. Jesus's resurrection trick is now common knowledge to all warlocks, and can be performed by a 'ghost' to pull back the light (soul) of a guardian; however Light can be lost to the darkness, meaning it is NOT eternal.