I won't come back alive

My body is taken by the cells inside
They'll consume me, hollow,
Turn me dry
I've got no way to fight this on my own
Whatever ails me fades a stable soul
Turn up the lights, sear it away
Now it's unending fills the body wide
How long 'til this common life will fold
Turn up the lights, sear it away
It's what you can't know
I won't come back alive
Both eyes retire
All bones are dark
Down to dust