The grate

Tied to a iron "bed"
Feet and legs were greased
And then a brasier
Was placed underneath
Decompose the melting flesh
Repulsive stench
Of hot roasting flesh
Flesh is roasted, bones are showed
Limbs are lacerated, bodies are desecrated
The fire would cause burns if you are guilty
But leave you unharmed if you are innocent
Innocence presupposed
Withstand any trial