of particular interest is the passage ( p. 165 ) in which a reason is given for ulmo 's choice of a man as the agent of his designs : 'now melko was not much afraid of the race of men in those days of his great power , and for this reason did ulmo work through one of this kindred for the better deceiving of melko , seeing that no valar and scarce any of the eldar or noldoli might stir unmarked of his vigilance . '