"The scanner just lit up like a Christmas tree!" What are the implications of the existence of Christmas in the DRG universe?

By extension, is it safe to assume there was some sort of Jesus figure? Was he human? Dwarf? Elf? Does the Abrahamic God exist in their canon? Surely if Christmas is culturally understood, the dwarves know about Christianity. Do dwarves have original sin? Can dwarves go to heaven? It's Sunday night, I want to hear your most batsh*t insane takes.