This isn't a natural development of a religion, the Slavic people were baptized and converted into Christians simular to how the Aztecs were turned from their bloodthirsty deities into devoted Jesus worshippers via an outside force- in that case the European settlers. Don't wish to argue with you, however a supreme being in a religion should be a creator god that made everything and is still actively worshipped- Ymir is teh first living being and a part of the creation story but wasn't worshipped by the norse unlike Odin who is the leader of the pantheon. Granted, this is moot since today norse paganism has almost been replaced by Chrisitanity and Odin while powerful isn't an omnipotent figure simular to Ahura Mazda or the Abrahamic God. Seriously hope we stop discussing because this conversation won't ever have an ending.