User blog comment:Kajune/Lucifer, first son?/@comment-27887977-20160414003640/@comment-34326521-20160414095656

"Younger" could mean psychologically, since Lucifer was always considered immature. And "big/little brother" could refer to power. How do you know they weren't the ones using figurative language?

This is yet again another instance of the "It can't be a retcon because it'd be a retcon" "argument".