The LORD of Hosts has sworn by Himself: “Surely I will fill you up with men as with locusts, and they will shout in triumph over you.”
The Prophet more fully confirms what he had said by introducing God as making an oath; and it is the most solemn manner of confirmation when God swears by his own name. But he speaks of God in the language of men when he says that he swears by his own soul; for it is a kind of protestation when men swear by their own...
Babylon was once a golden cup in the Lord's hand, filled with His favor, but also His battle-axe to break nations. Those that carry all before them a great while will yet meet their match; even Babylon's day will come, and it too shall fall.
AI summary
Commenting on Jeremiah 51:1-58
The Lord hath sworn by himself, saying,.... Or, "by his soul" or "life" (q); which is himself, than which he cannot swear by a greater, Heb 6:13; and the certain performance of what he swears unto need not be doubted of; and indeed the design of the oath is to assure of the truth of the thing, about which, after this, there ought to be...