50:1-7 The king of Babylon was kind to Jeremiah, yet the prophet must foretell the ruin of that kingdom. If our friends are God's enemies, we dare not speak peace to them. The destruction of Babylon is spoken of as done thoroughly. Here is a word for the comfort of the Jews. They shall return to their God first, then to their own land; the promise of their conversion and reformation makes way for the other promises. Their tears flow not from the sorrow of the world, as when they went into captivity, but from godly sorrow. They shall seek after the Lord as their God, and have no more to do with idols. They shall think of returning to their own country. This represents the return of poor souls to God. In true converts there are sincere desires to attain the end, and constant cares to keep in the way. Their present case is lamented as very sad. The sins of professing Christians never will excuse those who rejoice in destroying them.
3. a nation—the Medes, north of Babylon (Jer 51:48). The devastation of Babylon here foretold includes not only that by Cyrus, but also that more utter one by Darius, who took Babylon by artifice when it had revolted from Persia, and mercilessly slaughtered the inhabitants, hanging four thousand of the nobles; also the final desertion of Babylon, owing to Seleucia having been built close by under Seleucus Nicanor.