The legend of Osiris, Isis, Horus and Set is one of the most powerful in Egyptian mythology.

Osiris taught men how to farm the land and make wine and he was much loved by the people. Set was envious of his brother and so conspired to kill him. He secretly had a coffin made especially for his brother and then held a party inviting his unced that he would give it away to whoever it fitted. A few people tried the coffin, but alas they did not fit. Set encouraged his brother Osiris to try the coffin. As soon as he lay back the lid was slammed down and sealed shut. Set and his cronies carried the coffin to the Nile and threw it in, drowning Osiris. This action came to represent the annual flooding of the Nile.

Isis, with the help of her sister Nephthys, brought him back to life using their magical powers. Before revenge could be brought upon Set, he struck again - and this time dismembered Osiris into thirteen parts (some accounts say fifteen) and hid them thoughout the land. Isis searched the land for the pieces and spent many years doing so, for Set had hidden them well, but she was not able to find all of them. The missing piece was his penis, but she put together what she had and once again brought Osiris back to life.

This time she took no chances and kept him hidden until he had made her pregnant. Isis's magic could not keep him alive like this for too long and he died once more. The other gods decided to make him king of the underworld where he reigned over the dead but not before his death had been avenged.

The son of Osiris and Isis was Horus, who from birth sought to avenge his father's murder. He was brought up in secret in the marshes of the Nile delta. As soon as he was old enough, the two met in battle. The fight was long and bloody; Horus lost one of his eyes in the battle and Set lost a testicle.

The conflict was brought before the rest of the gods. They decided in favor of Horus and gave kingship of the country to him. Set was condemned as the evil one and banished to the outlands. In other versions the two deities were reconciled and represented the union of Upper and Lower Egypt.