Imagine a group of elves, who somehow lived on a plane of ice, and soon they had their own mythos, that could have a benign and good ice god. If they would find a permanent portal to a treacherous glacier in the material plane, how their temple would look like?
Lets go to something more specific. If they became natives to planes of ice, once this god/godess saved them in a war when their lands were scorched, and with the dinive help they adapted to the icy conditions.
So the locals now see them as strange icy elves, mostly warriors, who don't speak their language, and some conflicts with locals are possible (when locals started it). Yet the elves helped other locals.
How would these elves know their protector deity?
What would the locals think?