Let not your heart faint, and be not fearful at the report heard in the land, when a report comes in one year and afterward a report in another year, and violence is in the land, and ruler is against ruler.
Here the Prophet in due time anticipates a danger, lest the Jews should be disturbed in their minds, when they saw those dreadful shakings which afterwards happened; for when their minds were raised to an expectation of a return, great commotions began to arise in Babylon. Babylon, as it is well known, was for a long time besieged, and, as is usual in wars, every day brings forth something new.
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
Then the heaven and the earth, and all that is therein, shall sing for Babylon,.... At the destruction of her, rejoicing at it; not at the ruin of fellow creatures, simply considered; but relatively, at the righteousness of God in it, and the glory of his justice, and the deliverance of many by it from tyranny and bondage.