Language gets corrupted a lot.
Ideas do at the same time.
Alien more or less means foreign.
Angels were foreign to Earth, native to the heavens
Perhaps foreign dimensionally
Perhaps temporally
Angels could walk among "mankind" unnoticed
Presumably, demons are negatively oriented angels
What I'm getting at is that some PEOPLE who live on Earth have their ancestry someplace else. We are the descendants of foreign beings, aliens, angels, elohim, annunaki, whatever you'd like to call it
We are the angels and demons and the war has been everlasting
Sooooo…..wake up