User blog comment:Kajune/Lucifer, first son?/@comment-3068419-20160413231453/@comment-1975828-20160414123045

Amara could simply be empathising the fact that Lucifer is the most beloved. I mean, that's a pretty big deal. God is hiding, has been for eons, and Amara believes out of all His creations, God is almost certainly going to spring into action to protect just one.

Though I can't deny that the writers are being unkind to Michael. Maybe they don't have an actor for him?