Isaiah 16:10-12. “And gladness is taken away, and joy out of the plentiful field: and in the vineyards there shall be no singing, neither shall there be shouting: the treaders shall tread out no wine in their presses: I have made their vintage shouting to cease. Wherefore my bowels shall sound like an harp for Moab, and mine inward parts for Kirharesh. And it shall come to pass, when it is seen that Moab is weary on the the high place, that he shall come to his sanctuary to pray; but he shall not prevail.”
As Isaiah saw the bleak future that awaited Moab because of its pride and sin in turning to idol worship, he makes these verses, from 6-14, very personal. He sees what is coming, but has no power to stop it. He is grieved, and expresses his grief in heart-felt words.