What Pray Tell Could I Be?

Unmovable, unbreakable,
Unbending, and unshakable,
Hard as iron, sharp as steel,
Accepts no false deal,
To pain will not yield,
Not hide behind any shield,
Defended kings and paupers the same,
From vices’ wicked game,
Forges cities and protects kin,
Slays demons, and wards off sin,
Where I am not found,
The helpless are bound,
The weak are slain,
And the wicked reign,
Cities crumble into dust,
And men give in to lust,
Warriors fear the night,
And none fight for right,
I armor many a soul,
And can sear like a hot coal,
Under my aegis all men are free,
For fallacies animosity,
I’ve tread beneath the earth
And been here before man’s birth,
I have flow the heaven’s and sky,
I shall be here after the last wicked shall die,
What pray tell could I be?
I am naught but integrity.