Four sons of Horus Nekhen. In Spells 112 and 113 of the Book of the Dead which have their origins in the earlier Coffin Texts Spells 157 and 158, it is described how Horus has his eye injured, and because of this is given the sons of Horus: The injury of Horus's eye is part of the myth cycle known as the Contending of Horus and Set recounting how they fought over the crown of Egypt. In a unique illustration in the tomb of Ay the sons of Horus are shown wearing the red and white crowns as the Souls of Pe and Nekhen,
Four sons of Horus to say: "I have come to be your protection. I have bound your head and your limbs for you. I have smitten your enemies beneath you for you, and given you your head, eternally." Spell 148 in the Book of the Dead directly associates all four of Horus's sons, described as the four pillars of Shu and one of the four rudders of heaven, with the four cardinal points of the compass. Hapi was associated with the north. Imsety the human headed son of Horus, protected the liver of the deceased and was in turn protected by the goddess Isis.