The Ancient Egyptians left a great and riche religious heritage, and a large number of religious sources such as: Pyramid texts, coffin texts, Book of the Dead, Book of the Amduat, Book of  Two ways, Book of  the Caves, Book of the Night and Book of Day and Book of the Gates, which appeared in the New Kingdom and describing the nocturnal journey of the sun as a perception of transformation from life to the afterlife in the form of Twelve gates guarded by various deities and the deceased should recognize them to pass to the next stage of his journey. Many versions of the Book of Gates were inscribed in the tombs of the kings of the new kingdom in the Valley of the Kings, and inscribed very rare in the tombs of the nobles during this time at Thebes. But in the late Period many versions of this book were inscribed and modified in the private tombs at Thebes, such as the tomb of Mutirdis (TT410) at Thebes where a distinctive version of the Book of Gates appeared which motivate to study the royal and the private version in a comparative and analytical study to highlight the private version and the royal version as a case study the tomb of Ramesses VI (KV9).