Often confusing

Sinking

What is heaven but a door,
From dreams into our soul,
As death envelopes our pores,
We pray, naught for the void so coarse.
An endless twilight,
The rays crepuscular,
As the waters rise,
And shallows deepen.
As the mind falls,
A sinking mirror,
From world to world,
New lights, new terrors,
Till light is no more,
And heaven is gone,
And the mirror dark,
As we float down stark.
To the void, the plunge,
Beyond our touch,
To emptiness and chaos,
And entropy, a seance,
With the past and future,
With the now and then,
With what could have been and what is,
As we merge with the abyss.