There was once a god named Ra who had a bunch of children that were busy running the world. There was one particularly that he liked more than the others and that was his grandson Osiris who had a brother named Set.
I should be the Pharaoh of Egypt not you!! >:( Now you'll die and your body pieces will go in the river.
Osiris was much more liked than Set.
Osiris, I'll make you the God of the Dead.
Since Ra loved him so much, he made him the first Pharaoh of Egypt.
I miss you Osiris.
Set was furious so he killed Osiris, chopped him into pieces, and threw him into the river.
Ra was so angry at Set and decided to make Osiris God of The Dead, meanwhile young prince Horus murdered his Uncle Set even though he was young.
His wife Isis managed to gather all his body pieces up and had a friend put him back together, but couldn't bring him back to life. Now once every year, Isis goes to the river in memory of him and tears fill her eyes.