Fics like Poetry for fish

Dean doesn't quite seem to realize that Castiel is an ancient and powerful celestial being, God’s fearless weapon, an Angel that has lived through apocalypses and countless tragedies before. Shaped by millions of years of blind obedience, free will could turn out to be his undoing. A journey into Castiel's mind, from the day he was created to his encounter with the Winchesters and the events of the Apocalypse. Basically the Bible and Supernatural through Castiel's eyes, until somewhere into season 5 where the story will stray away from canon...

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