"What's hidden with in"

At infancy, before infamy I took the devil's oath
That's why I savor drinking the blood that flows from the gash in your throat.
My adversaries don't live to sit in penitentiaries.
Tribute can only be given to them in cemeteries

Now tell me how can there reincarnation,
When a grave has your soul incarceration?
Don't you know that screaming is vain!
With sickening satisfaction I bare witness to your blood falling like rain

At this moment my malice truly reigns.
Because I'll be standing there until every ounce of blood empty from your veins.
In war there can be no chivalry.
Because without ruthlessness the can be no victory.

For my enemies there will not be any hospitality
My only charity will be brutality.
Your insurrection will not be wise.
It won't bring your resurrection, only your demise.

After you're slain there will be an invisible disgrace that sits on your face,
As I relish the diminishing beating of your heart's pace.
One day I'll be the one holding on the edge.
Fear I will not, because once I used blood to sign her pledge.

When that time comes only my life will be hanging on by a tread.
With her demonic grace I'll be walking with the dead.
Then I'll dine in hell, breaking the devil's bread.
And to quench my thirst, I'll be drinking on her malicious dread.