I would say that the statement that explains the ending of the sonnet is the last line is even more violent than the beginning. In the beginning, the poet is using either neutral or not so strong words as in the end of the sonnet - there he shows the full emotion he is feeling, by using words such as <em>enthrall, never be free, ravish, </em>etc. I believe that conveys a much stronger message than the beginning.
Percy realizes that the voice wants him to steal the lightening bolt. He also realizes that the voice isn't trying to pull him into the chasm, but rather pull itself out.
Explanation:
From Percy Jackson & the Olympians: The Lightning Thief
