Job 12:18

He looseth the bond of kings - The bond of kings (מוּסר mûsâr) here means that by which they bind others. Their power over others he loosens or takes away.

And girdeth their loins with a girdle - That is, he girds them with a rope or cord, and leads them away as prisoners. The whole series of remarks here refers to the reverses and changes in the conditions of life. The meaning here is, that the bonds of authority which they imposed on others are unbound, and that their own loins are bound with a girdle, not a girdle of royal dignity and ornament, but such a one as they are bound with who are servants, or who travel. “Pict. Bib.”