the wise have said that the hour was not yet come , and that only one speaking in person for the cause of both elves and men , pleading for pardon on their misdeeds and pity on their woes , might move the counsels of the powers ; and the oath of feanor perhaps even manwe could not loose , until it found its end , and the sons of feanor relinquished the.silmarils , upon which they had laid their ruthless claim .