The Vampire Bible ('Book of the Vampyr', 'The Original Testament') is the sacred text of vampire religion. It outlines the creation of all things, the life and destruction of Eve, and how The Authority came to be. It is said to predate the human Christian Bible.
Both the Authority and the Sanguinista Movement base their beliefs on this text, though the Sanguinistas take a much more literal interpretation.
"I swear fealty to the blood, to the gentile, the first, the last, the eternal. Father and mother, Lord and Eve, protect me as I protect you, from now until the hour of the true death.”
“And so it was that Eve was led to the True Death. And so it shall be again. As the blood ascends, two will become one. When light and dark collide, our salvation is at hand.”