but mablung and the elves came and looked on the shape of glaurung lying dead , and upon the body of turin , and they grieved ; and when men of brethil came thither , and they learned the reasons of turin 's madness and death , they were aghast ; and mablung said bitterly : 'i also have been meshed in the doom of the children of hurin , and thus with my tidings have slain one that i loved . '