Heavy Rest the Chains of the Damned

Confined behind stone walls
Apprehended, bound by chains
A man amidst the wolves
A man certain of his demise
Apprehensive remained the king
If truly he has captured the one
Beware the wrath of his kin
A sanguinary threat you must heed
"No sword hast cleavd' him
No snake will pierce his skin!!
He is a mighty king indeed
Tear his clothing
Hang serpents from his sides
This man will meet his fate
Be him Ragnar or not"