17 Therefore the Lord will not rejoice in their young men, neither will he have mercy on their fatherless and on their widows; for every one is a hypocrite and an evildoer, and every mouth speaketh folly. For all this his anger is not turned away, and his hand is stretched out still. 18 For wickedness burneth as a fire: it devoureth briars and thorns, and kindleth in the thickets of the forest, and they go rolling up like a pillar of smoke. 19 Through the wrath of Jehovah of hosts is the land burned up, and the people is as fuel for fire: a man spareth not his brother; 20 and he snatcheth on the right hand, and is hungry, and eateth on the left hand; and they are not satisfied. They eat every man the flesh of his own arm:
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.