Lamentations 4:21,22

Rejoice and be glad, O daughter of Edom A sarcastical expression, as if the prophet had said, Rejoice while thou mayest, O Edom, over the calamities of the Jews; but thy joy shall not last long, for in a little time it shall come to thy turn to feel God's afflicting hand; the cup of affliction shall pass unto thee: see Jeremiah 49:7, &c. The punishment of thine iniquity is accomplished, O daughter of Zion, &c. It was usual for the prophets, when they denounced God's judgments against any heathen nation, at the same time to give gracious promises to Israel; thereby importing that God would never cast off the Jewish people utterly, as he did other nations, but would in due time extend his mercy toward them. He Namely, God; will no more carry thee away Or, rather, suffer thee to be carried; into captivity “These and such like expressions, if they be understood in a strict, literal sense, must relate to the final restoration of the Jews.” Lowth. He will discover thy sins He will manifest how great thine iniquities have been, by the remarkable judgments wherewith he will punish thee.