Odin
a frost giant that Odin and his brothers killed and used his blood for the sea, his body for the earth and his skull for heaven
When Villi, Ve, and Odin created the world out of Ymir's remains they used his blood to create the sea.
Odin is not considered the oldest god in mythology. In Norse mythology, he is one of the principal gods of the Aesir, but other deities, such as Ymir, who is a primordial being and the ancestor of all giants, predate him. Additionally, different mythologies have their own creation stories and older gods; for example, in Hinduism, deities like Brahma are considered ancient. Thus, while Odin is significant within Norse mythology, he is not the oldest god across all mythologies.
Why is "The Origin of the Robin" considered a creation myth?
Ymir. He was a frost giant. He played a large part in the Norse creation myth.
Odin. Wodinsday, or Wednesday is named after him
This sounds like the myth of Pangu. In Chinese mythology, Pangu was born of a "chaos egg" that took 18,000 years to become balanced. Pangu then rose from the egg, and created the universe.
Ymir, the frost giant.
The Norse giant is Ymir. According to Norse mythology, Ymir's body was used by Odin and his brothers to create the world. Ymir's flesh became the earth, his blood the seas, his bones the mountains, and his skull the sky.
They made it from Ymir's flesh and blood.
Ymir
Ymir was the Norse giant whose body was used by Odin and his brothers Vili and Ve to create the earth. They used his flesh to make the land, his blood to create the seas, and his bones to form the mountains.
In Norse mythology, the god believed to have created the earth is Odin. He played a central role in the creation of the cosmos, along with his brothers Vili and Ve. Together, they shaped the world from the body of the slain frost giant Ymir.
Odin
The first giant of Norse mythology was Ymir. He was created (by whom or what is unclear) imprisoned inside a block of ice in Ginunga gap. It was not until the giant cow, Audhumla (freed from her own ice block by the showers of sparks emanating from Surtrs flashing sword;) found Ymir, trapped in his block of ice that he was finally freed. Ymir was soon to be slain by the children of his feet, Odin, Vili and Ve. His body was thence fashioned into the nine realms.
When Villi, Ve, and Odin created the world out of Ymir's remains they used his blood to create the sea.