I Have a Knack

I have this ability
to detect nobility.
My eyes are
sensitive to the light.
This is why I would
serve you,
if you were king
(and you are).
This is why you would
give me the keys
to your treasure house,
your harem.
I would move through the place
like a shadow;
I would be by your shoulder
when you called.
You would give me
the honor of the first
bite from your plate,
the first sip from
your cup.
You know it would
be this way
whether you sat
upon a throne
of gold,
or a green, grassy
hillock.