John Calvin Commentary Jeremiah 50:22

"A sound of battle is in the land, and of great destruction." — Jeremiah 50:22 (ASV)

The Prophet continues the same style of speaking, for he says that there would be the voice or the sound of battle. Could he rouse up the Medes and the Persians? Not indeed by his own power, but here he exalts the efficacy of his doctrine; as though he had said, that the vengeance he denounced on the Babylonians would be in readiness when the time came, as Paul says that the ministers of the gospel had vengeance ready at hand for all those who despised it. We now see why the Prophet mentions the word battle, and says that breaking, or ruin, would be great in the land.