John Trapp on Job 33:21

Verſe 21. His fleſh is conſumed away that it cannot be ſeen] He that was habilior paulo, corpulent and well lined within, as we ſay, is ſo pined with long ſickneſs, that you can hardly know him for the ſame man, and he may well cry out with the Prophet, My leanneſſé, my leanneſſe! Of Chriſt it is ſaid, (though not through ſickneſs) that he had no form nor comlineſſe, (and yet he was the faireſt amongſt men, Pſal. 45.2.) through grief and ſufferances, neither was there any beauty left that we ſhould deſire him, for his outſide, Iſai. 53.2. And of Mr. Fox the Martyrologue, it is reported, that having with infinite paines finiſhed that elaborate Work of his, the Acts and Monuments of the Church, in eleven years ſpace, never uſing the help of any other man,Mr Clark in his Life. he grew thereupon ſo leane and withered, that his friends know him not. Now if ſorrow and hard ſtudy will ſo macerate a man, what marvel if long and ſharp ſickneſſe, and thereby extreme ſtomackleſneſſe cauſe leanneſs and deformity?

And his bones that were not ſeen] But could hardly be felt for fleſh and fat; now they ſtick out as in an Anatomy, ſo that you may count them, as alſo the veines and ſinewes; his body is become a very bag of bones, a skin-bottle in the ſmoak, as David hath it.