His mischief shall return upon his own head, And his violent dealing shall come down upon his own pate.
His mischief shall fall back in return upon his own head, and his violence come down [with the loose dirt] upon his own scalp.
His mischief shall return upon his own head, And his violence shall come down upon his own pate.
The trouble they cause will come back on their own heads; the violence they commit will come down on their own skulls.
He has opened a pit and enlarged it. And he has fallen into the hole that he made.