The Lord, that is able to bring to pass what he saith, hath sworn by his life, or by himself; see the like phrase Jer_22:5 44:26 49:13 Amo_4:2 6:8 Isa_45:23; that is, the thing next mentioned shall come to pass as certainly as that there is a God in heaven, or that God liveth.
Surely I will fill thee with men, as with caterpillars; I will bring against thee a great army, that shall be like a swarm of caterpillars, and shall come against thee in such numbers as caterpillars use to come, and for the same end, to eat thee up and destroy thee; and as soldiers use do when they go on to fight their enemies, or to assault cities, they shall make a great shout against thee.