Analysis of Sleep

I’ve got a good friend, called sleep.
I love it, oh so deep.
It comes to me every night,
And fills me with delight.
I wish it would stay for longer,
My love for it ever grows stronger,
But it vanishes much too soon,
It only comes at the next moon.
Last night it came rather late,
That anguish in bed in hate.
Sleep fills me with endless pleasure,
Joy impossible to measure.
Tonight it will come again,
But this day I must live until then.
But some time it won’t go away,
It’s called Resurrection day!
And then it never will leave me,
Though others may think to grieve me.