according to ancient greek myth who is the chief god
Zeus Zeus (/zjuːs/;[3] Greek: Ζεύς Zeús [zdeǔ̯s])[4] is the sky and thunder god in ancient Greek religion, who ruled as king of the gods of Mount Olympus. His name is cognate with the first element of his Roman equivalent Jupiter. His mythologies and powers are similar, though not identical, to those of Indo-European deities such as Indra, Jupiter, Perun, Thor, and Odin.[5][6][7]
Osiris Osiris (/oʊˈsaɪrɪs/, from Egyptian wsjr, Coptic ⲟⲩⲥⲓⲣⲉ)[1][2] is an Egyptian god, identified as the god of the afterlife, the underworld, and the dead, but more appropriately as the god of transition, resurrection, and regeneration. He was classically depicted as a green-skinned deity with a pharaoh's beard, partially mummy-wrapped at the legs, wearing a distinctive crown with two large ostrich feathers at either side, and holding a symbolic crook and flail. Osiris was at times considered the oldest son of the god Geb, though other sources state his father is the sun-god Ra,[3] and the sky goddess Nut, as well as being brother and husband of Isis, with Horus being considered his posthumously begotten son.[3] He was also associated with the epithet Khenti-Amentiu, meaning "Foremost of the Westerners", a reference to his kingship in the land of the dead.[4] As ruler of the dead, Osiris was also sometimes called "king of the living": ancient Egyptians considered the blessed dead "the living ones".[5] Through syncretism with Iah, he is also the god of the Moon.[6]