Jeremiah relates God’s judgment on Babylon- a prophecy fulfilled. Babylon is now a ruin. Gates were found during excavating that are four stories high and more than 20 feet thick, now in a British museum. Excavations are no longer allowed.

Jer 50:24
I set a trap for you, O Babylon, and you were caught before you knew it; you were found and captured because you opposed the LORD.

Daniel (in Daniel 5) deciphered the mysterious handwriting on the wall that was foretold by this passage in Jeremiah. King Belshazzar was killed while he and his nobles were having a drunken banquet. They were caught before they knew it, just as Jeremiah had prophesied.

Jeremiah also tells Judah and Israel that the Redeemer will defend their cause.

Jer 50:34
Yet their Redeemer is strong; the LORD Almighty is his name. He will vigorously defend their cause so that he may bring rest (salvation) to their land, but unrest (damnation) to those who live in Babylon.