My skin is black upon me, and my bones are burned with heat.
Ver. 30. My skin is black upon me] Through the violence of the fever, and a dust matter, his skin was as black and mud coloured as the waters of the river Nile, which hath its name Sihor, in the Hebrew, from this root, Jeremiah 2:18. The Ethiopians' skin is black, but that is natural to them, and they think it best so, and therefore paint the devil white, &c.
And my bones are burnt with heat] In the fever they call Epialis, the heat is all inward, and drieth up the radical moisture. Job complaineth of such a distemper, and so doth David, Psalms 32:3,4, and Solomon tells us, that a heavy heart drieth up the bones. Beza expoundeth it of the jawbone, dried and pined away for want of moisture.