@Bartok: Thanks for clarification! That's the great thing about true art. It is universal and you can project it onto whatever you like. The grand topics life/death, mythology, specific incidents like the one mentioned here, personal eyperience.
Meanwhile, over at Instagram: Yesterday, which was mother's day in Norway, Bent posted a photo of his mother, who died of cancer half a year ago. He used several hash-tags, including "eviglys" and "eternallight". Could the song be about his mother?