Therefore shall the Lord, the Lord of hosts, send among his fat ones leanness; and under his glory he shall kindle a burning like the burning of a fire.

Wesley's Notes

10:16 The Lord - The sovereign Lord of thine and all other armies, shall strip him and all his princes, of their wealth, and might, and glory; and destroy his numerous army, as the fire doth those combustible things which are cast into it.

Jamieson-Fausset-Brown Bible Commentary

16. fat ones-(Isa 5:17). The robust and choice soldiers of Assyria (Ps 78:31, where "fattest" answers in the parallelism to "chosen," or "young men," Margin).

leanness-carrying out the image on "fat ones." Destruction (Ps 106:15). Fulfilled (Isa 37:36).

his glory-Assyria's nobles. So in Isa 5:13, Margin; Isa 8:7.

kindle-a new image from fire consuming quickly dry materials (Zec 12:6).

Matthew Henry's Concise Commentary

10:5-19 See what a change sin made. The king of Assyria, in his pride, thought to act by his own will. The tyrants of the world are tools of Providence. God designs to correct his people for their hypocrisy, and bring them nearer to him; but is that Sennacherib's design? No; he designs to gratify his own covetousness and ambition. The Assyrian boasts what great things he has done to other nations, by his own policy and power. He knows not that it is God who makes him what he is, and puts the staff into his hand. He had done all this with ease; none moved the wing, or cried as birds do when their nests are rifled. Because he conquered Samaria, he thinks Jerusalem would fall of course. It was lamentable that Jerusalem should have set up graven images, and we cannot wonder that she was excelled in them by the heathen. But is it not equally foolish for Christians to emulate the people of the world in vanities, instead of keeping to things which are their special honour? For a tool to boast, or to strive against him that formed it, would not be more out of the way, than for Sennacherib to vaunt himself against Jehovah. When God brings his people into trouble, it is to bring sin to their remembrance, and humble them, and to awaken them to a sense of their duty; this must be the fruit, even the taking away of sin. When these points are gained by the affliction, it shall be removed in mercy. This attempt upon Zion and Jerusalem should come to nothing. God will be as a fire to consume the workers of iniquity, both soul and body. The desolation should be as when a standard-bearer fainteth, and those who follow are put to confusion. Who is able to stand before this great and holy Lord God?