Based on this information write a new paragraph.

Many Egyptians believed that when it came to a death of their Pharaoh, they would have to bury the Pharaoh deep inside the Pyramid. The ancient Egyptian literature dates back to the Old Kingdom, in the third millennium BC. Religious literature is best known for its hymns to and its mortuary texts. The oldest extant Egyptian literature is the Pyramid Texts: the mythology and rituals carved around the tombs of rulers. The later, secular literature of ancient Egypt includes the "wisdom texts", forms of philosophical instruction. The Instruction of Ptahhotep, for example, is a collation of moral proverbs by an Egto (the middle of the second millennium BC) seem to have been drawn from an elite administrative class, and were celebrated and revered into the New Kingdom (to the end of the second millennium). In time, the Pyramid Texts became Coffin Texts (perhaps after the end of the Old Kingdom), and finally, the mortuary literature produced its masterpiece, the Book of the Dead, during the New Kingdom.