14 The LORD Almighty has sworn by himself: I will surely fill you with troops, as with a swarm of locusts, and they will shout in triumph over you.

Read Jeremiah 51:14 Using Other Translations

The LORD of hosts hath sworn by himself, saying, Surely I will fill thee with men, as with caterpillers; and they shall lift up a shout against thee.
The LORD of hosts has sworn by himself: Surely I will fill you with men, as many as locusts, and they shall raise the shout of victory over you.
The LORD of Heaven’s Armies has taken this vow and has sworn to it by his own name: “Your cities will be filled with enemies, like fields swarming with locusts, and they will shout in triumph over you.”