John Trapp on Isaiah 16:6

Ver. 6. We have heard of the pride of Moab] His harſh and haughty carriage toward Gods poor people, though he were adviſed the contrary, ver. 1.3, 4. Good counſel is but caſt away upon a proud perſon. Now, the Moabites were as much noted then for their pride as now the Spaniards are. And their pride appeared by their braggs and threats. But

His lyes ſhall not be ſo] Or, his indignation is more then his ſtrength, as Hierom rendreth it. His boaſtings and bluſters ſhall come to nothing: his pride ſhall be his bane and break-neck.