The wish to be an angel.

Amongst the skies they walk,
amongst those that rise from the earth,
they are believed to be the ones that rise from the earth,
some meant to guide and protect,
some to punish and oppress.
The ones of earth wish to be with them,
changing their walk and talk,
they believe they'll be with them.
If only they knew that their greatest wish fulfilled,
would be possible only if they sacrifice it.