In what way does The Pulley allude to the myth of Pandora's Box?How does this poem reflect mythology?

In my opinion, this poem is sort of a mirror image of the
Pandora myth.  In other words, it has God doing the exact opposite of what Pandora
did.

In the Pandora myth, Pandora was curious and she
opened the box or jar or whatever and let out all the bad stuff.  At the end, all that
was left in the box was hope.

By contrast, in this poem,
God has a glass full of blessings.  He takes all the blessings out of the glass and
spreads them over the world to help make us happy.  The only thing he leaves in the jar
is rest.