Horus accounts have the penis of Osiris surviving). After becoming pregnant with Horus, Isis fled to the Nile Delta marshlands to hide from her brother Set, who jealously killed Osiris and who she knew would want to kill their son. There Isis bore a divine son, Horus. Since Horus was said to be the sky, he was considered to also contain the sun and moon. It became said that the sun was his right eye and the moon his left, and that they traversed the sky when he, a falcon, flew across it. Later, the reason that the moon was not
Horus name King Sekhemib, "Per-en-ma'at" (meaning "he who achieves Ma'at"), is the clearest early expression of this. As already mentioned, most Egyptian kings favored Horus as their dynastic name patron. In a few cases, especially during the midst of the 2nd Dynasty, at least two serekh names seem to contradict the Horus tradition. The most prominent example is king Seth-Peribsen. He first replaced the falcon figure of his serekh by the walking animal of the god Seth. Then, his name was written in a plural form, thus being addressed to Seth as well as to Horus. The serekh names of his followers