My son, my son

Son, where are you
I can't see you
I can't feel you
I can't hear you
My spirit is leaving
this old tired body
hold my hand, my son
to feel it while I
breath my last
Remember the days past
now, no longer very clear,
how you ran to me
when I came home from work
how you clung to my legs
shouting daddy daddy
I saw a birdie
or I made a castle
and then all went past
and you left us
your mother now long gone
and now I to follow soon
I miss my wife, my son
but I miss you more
for you are alive
where are you, son?
I can't hear you.
Is this silence
goodbye then?