He poureth contempt upon princes, i.e. he makes them contemptible to their subjects and others.
Weakeneth, Heb. he looseth the girdle; which phrase signifies weakness, as Isa_5:27; as the girding of the girdle notes strength and power, as Isa_22:21 45:5; both these phrases being taken from the quality of their garments, which being loose and long, did disenable a man for travel or work.