The Vikings believed that the world developed as an empty space. It had ice in the north of the space and fire in the south. Then when the ice melted it ran and it went quite far. It turned into a puddle. Then there formed a frost giant and a giant cow. When the frost giant started to sweat because he was hot there formed little giants and giantesses. The giant cow found a human in the ice and he ended up to be Buri. Then he had a boy called Bor. After that Bor had three children called, Odin, Vile and Ve. They all became the first three gods.