i believe that the gods of mythology were real people, nephillim, born of a fallen angel and human, who were alive at some point in history, though there exploits have been blown out of proportion.
i just learned that PROJECT:ECHO has not seen lord of the rings? if there are any others who have not seen it please watch it. and all of us who have seen it have a duty to get everyone else to see it.
it is from the great and all powerful movie known in your language as WAYNES WORLD. now look upon my signature in awe, as its awesomeness melts the flesh from your very eyes! and have fun on the forums
to be a god in mythology you don't need to be all powerfull , all knowing or even a true immortal. you just need to be the powerful mystic leader of a mystic race and have been worshippe at some time. im also pretty positive that celestia was worshipped at some time, considering how ponies swear by her name.
im not creating a joke. this is my idea of what happened before equestrian was ruled by celestia. also I could be wrong, but ive never heard of sleipnir being worshipped, just that he was odins war horse. also my plot does require a god for the earth ponies and sleipnir was the best fit. id still be glad to see your idea for the origins of equestrian.