Is it really fair to call something repeating if it more like a different version of the same story? So why then should I share a different version of the same story if a version of the story already exists? Great question and it seems that the rule of a single version only fits with some artistic expression of which I think is the childhood stories than in most other expressions i.e. movies, music or dance. Look Little Red Riding Hood cannot change least we lose entire generations of kid-lings to the future history. And can you imagine in the broke up families one reading one version and another reading a completely different version to the same kid. Wow this could be an epic destroyer to red and the Wolf.
All kidding aside, repeating stuff is bible. Hello we have four Gospels. I think Faith is repeated 365 times in the Bible – now this can’t be because there are 365 different meanings to it, can it? Nope.
This story is not a ditto copy to another one, like the Gospels it carries over some of the same elements and includes some new stuff. If you have a clear understanding that Satan has kids and god has kids and you know how this came about, then absorb the new elements and grow thus bigger.