Isaiah 33:4

“And your spoil shall be gathered [like] the gathering of the caterpillar, &c.] This is the answer of the Lord to the prayer of his church, signifying that their enemies should flee, be scattered, and perish, and that they should be victorious, and enjoy the spoils of them; which they should gather as easily as the caterpillar or locust, as some render it, gathers and consumes herbs, and every green thing; or as easily as they are gathered, and laid on heaps, being weak and unable to defend themselves: most understand it of the Jews going into the camp of the Assyrians, after the destruction of them by the angel, and gathering their spoil. The Targum is, “and the house of Israel shall gather…”

“The invaders' "spoil" shall be left behind by them in their flight, and the Jews shall gather it. caterpillar--rather, "the wingless locust"; as it gathers; the Hebrew word for "gathers" is properly used of the gathering of the fruits of harvest (Isa 32:10). running to and fro--namely, in gathering harvest fruits. he--rather, "they." them--rather, "it," that is, the prey.”

“And your spoil - The booty that the Assyrian army bad gathered in their march toward Jerusalem, and which would now be left by them to be collected by the Jews. Shall be gathered like the gathering of the caterpillar - The grammatical construction here is such that this may admit of two interpretations. It may either mean, as the caterpillar or the locust is gathered; or it may mean, as the caterpillar gathers its spoil. It often occurred that in countries where the locust was an article of food, they were scraped together in large quantities, and thrown into ditches, or into reservoirs, and retained to be eaten. This is the custom in some parts of Africa. But the meaning here is,…”

“Your spoil - That treasure which you have raked together, by spoiling divers people. Gathered - By the Jews at Jerusalem, when you flee away. Like the caterpillar - As caterpillars gather and devour the fruits of the earth. As locusts - As locusts, especially when they are armed by commission from God, come with great force, and run hither and thither. Isaiah 33:5”

“your spoil: Isa 33:23; Kg2 7:15, Kg2 7:16; Ch2 14:13, Ch2 20:25 the running: Joe 2:9, Joe 2:25 Isaiah 33:5”