The Light is God and the Traveler is Jesus. The Darkness is Satan and the Darkness minions are the demons. The Ghosts are the light's angels. Before the darkness came the Traveler brought the golden age which was a miracle then the apocalypse happened when the Darkness attacked. Then the 4 seals were broken, War took peace from the colonies (the war of light and darkness found it's battleground), Pestilence brought disease (Darkness was spreading to each of the colonies), Famine brought brings hunger (Loss of troops to fight in the war), Death appeared and Hades followed (The death of all the colonies except the last city). Then the fifth seal, brought the Martyrs back to life (The Ghosts were sent out to find dead soldiers and resurrect them in the light, creating a holy army), then the 6th seal caused an earthquake, turning the sun black and the moon turned blood red as heaven's stars fell unto earth... (The Traveler stopped, just hovering over the city as the Guardians fight against Hell's forces), Lastly the seven seal was sound of seven trumpets (The ending of the Dark age). Basically i took what Destiny gave us and put a Christianity twist to it or a what this "story" is similar to. (P.s. I am not Christian but to me Destiny does seem like the Starting and going through the 6th seal from the Christian's version of the Apocalypse and I think its kinda cool) :P