17 That is why the Lord did not have pity on their young people, or compassion on their orphans and widows; for everyone was godless and an evildoer, and every mouth spoke folly. For all this his anger has not turned away; his hand is stretched out still. 18 For wickedness burned like a fire, consuming briers and thorns; it kindled the thickets of the forest, and they swirled upward in a column of smoke. 19 Through the wrath of the Lord of hosts the land was burned, and the people became like fuel for the fire; no one spared another. 20 They gorged on the right, but still were hungry, and they devoured on the left, but were not satisfied; they devoured the flesh of their own kindred;
Matthew Henry's Commentary on Isaiah 9:17-20
Commentary on Isaiah 9:8-21
(Read Isaiah 9:8-21)
Those are ripening apace for ruin, whose hearts are unhumbled under humbling providences. For that which God designs, in smiting us, is, to turn us to himself; and if this point be not gained by lesser judgments, greater may be expected. The leaders of the people misled them. We have reason to be afraid of those that speak well of us, when we do ill. Wickedness was universal, all were infected with it. They shall be in trouble, and see no way out; and when men's ways displease the Lord, he makes even their friends to be at war with them. God would take away those they thought to have help from. Their rulers were the head. Their false prophets were the tail and the rush, the most despicable. In these civil contests, men preyed on near relations who were as their own flesh. The people turn not to Him who smites them, therefore he continues to smite: for when God judges, he will overcome; and the proudest, stoutest sinner shall either bend or break.