The Book of Gates is the principal guidebook to the Netherworld . It first appeared in the tomb of the last king of the Eighteenth Dynasty . It was later found in the tombs of the Nineteenth and part of the Twentieth Dynasties of the New Kingdom . The book drives its importance from the role it played in allowing the dead pharaoh navigate his way along the Netherworld together with the Sun-god , so that his resurrection could be affected . It emphasizes gates with guardian deities whose names must be known in order to pass them . This is actually a very old tradition dating to at least the Book of the Two Ways in the Coffin Texts , where there are seven gates with three keepers at each .
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