The fact that a few objects and ideas - relating especially to candles; light - can exist in many cultures, and be read instantly as Religion, suggests that all religions are One. Or more academically, that religions developed out of cross-cultural borrowing between different cultures and faiths. Or mythic or belief systems.
Such rituals may also reflect a typical response to facts in the natural world. In the present example: in the winter, the daylight hours are shorter, and the dark nights are longer. The use of candles, fire, partially pushes back the cold and dark.This would be one anthropological, materialist/functionalist reading of religion.